Toolspirejusttools.info

Every tool in one list

398 tools across 16 collections. Filter the list or search. Each one runs in the browser, with no account and no upload.

Showing 398 of 398 tools

Image CompressorPopularImage Compressor on Toolspire: Compress JPG, PNG, WebP and AVIF images on your device. Shrink photos by up to 90% or hit an exact KB target.Image Tools Word CounterPopularWord Counter on Toolspire: Count words, characters, sentences and paragraphs as you type, with reading time, keyword density, readability and limits.Text Tools Password GeneratorNewPassword Generator on Toolspire: Generate strong, random passwords, memorable passphrases and PINs with a cryptographically secure generator. Free.Security Tools JSON Formatter & ValidatorNewJSON Formatter & Validator on Toolspire: Format, validate, minify and repair JSON online. Get the exact line and column of every error.Developer Tools EMI CalculatorNewEMI Calculator on Toolspire. Calculate your loan EMI, total interest and full repayment schedule instantly. See yearly charts.Calculators Merge PDFNewMerge PDF files on your device. Combine PDFs in any order, pick exact pages from each and download one file — processed on your device with without uploading.PDF Tools Image ResizerNewResize JPG, PNG and WebP images by pixels, percentage or social media presets. Crop to fill or fit, batch resize and download a ZIP — without uploading needed.Image Tools QR Code GeneratorNewQR Code Generator on Toolspire: Create free QR codes for links, UPI payments, Wi-Fi, WhatsApp, contacts and more. Add colours and a logo, download PNG or SVG.QR & Barcode Tools Text to HandwritingNewText to Handwriting on Toolspire: Turn typed text into realistic handwriting on ruled paper. Pick from 7 handwriting styles including Hindi.Text Tools Images to PDFNewConvert JPG, PNG and other images to one PDF. Reorder and rotate pages, choose A4 or Letter, margins and quality — free, private and with without uploading.PDF Tools PDF Password RemoverNewPDF Password Remover on Toolspire: Remove the password from PDFs you can open. Unlock AES and RC4 protected PDFs and lift print and copy restrictions — free.PDF Tools WebP ConverterNewWebP Converter on Toolspire: Convert PNG, JPG, GIF and HEIC images to WebP on your device. Lossy or lossless, transparency kept, batch ZIP download — free.Image Tools HEIC to JPG ConverterNewHEIC to JPG Converter on Toolspire: Convert HEIC and HEIF photos from iPhone to JPG, PNG or WebP right on your device. Batch convert at full resolution — free.Image Tools Compress PDFNewCompress PDF files on your device: shrink scans and image-heavy PDFs, or hit a target like 200 KB. Text stays sharp and selectable — free, private.PDF Tools Barcode GeneratorNewBarcode generator for EAN-13, UPC-A, Code 128, Code 39, ITF-14, GS1-128 and Data Matrix. Check digits added, exact mm size, PNG, SVG and batch print.QR & Barcode Tools BMI CalculatorNewBMI Calculator on Toolspire: Enter height in feet or cm and weight in kg or lb to see your BMI, WHO or Asian (Indian) category and healthy weight range.Calculators Worksheet GeneratorNewMaths worksheet generator: printable addition, subtraction, times tables and division sheets with answer keys. Set the difficulty, download a PDF.Education Tools XML to JSON ConverterNewXML to JSON Converter on Toolspire. Convert XML to JSON and JSON to XML online. Keeps attributes, arrays and leading zeros intact.Developer Tools WhatsApp Chat AnalyzerNewWhatsApp Chat Analyzer on Toolspire. Analyse a WhatsApp chat export: who texts most, busiest days and hours, top emojis and words, reply times.Text Tools SSL CheckerNewSSL Checker on Toolspire. Check any website’s SSL certificate: expiry date and days left, issuer, covered domains, revocation and CAA.Security Tools Split PDFNewSplit PDF on Toolspire: Split a PDF into several files by page ranges, every N pages or one file per page, or extract just the pages you need. Free, private.PDF Tools PDF to JPGNewConvert PDF pages to high-quality JPG or PNG images at up to 300 DPI. Pick the pages, download one image or a ZIP — free, private and without uploading.PDF Tools Rotate PDFNewRotate PDF pages and save them permanently, delete pages you don’t need and drag pages into a new order. See every page, free, with without uploading.PDF Tools Protect PDFNewAdd a password to a PDF with AES-256 encryption, and optionally block printing, copying or editing. Free, runs on your device — nothing is uploaded.PDF Tools Redact PDFNewRedact PDFs for real: black out names, Aadhaar, PAN, phone numbers and more so the hidden text is gone for good. Find-and-mark, free, without uploading.PDF Tools PDF WatermarkNewPDF Watermark on Toolspire: Add a text or logo watermark to a PDF: CONFIDENTIAL, DRAFT or “For KYC only” stamps with your own size, angle and opacity. Free.PDF Tools HTML to PDFNewConvert HTML code or an.html file to PDF with real, selectable text and clickable links. Choose A4 or Letter, margins and backgrounds. Free, without uploading.PDF Tools Flatten PDFNewFlatten PDF on Toolspire: Flatten a PDF online: turn filled form fields, signatures, comments and highlights into fixed page content no one can edit. Free.PDF Tools DNS LookupNewCheck A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records of any domain, see SPF and DMARC, and do reverse DNS for an IP address. Open DNS Lookup on Toolspire.Developer Tools DNS Propagation CheckerNewDNS Propagation Checker on Toolspire. Check DNS propagation worldwide: see the A, CNAME, MX. No account is required.Developer Tools EXIF Metadata RemoverNewEXIF Metadata Remover on Toolspire: Remove EXIF metadata from photos: GPS location, camera, date and hidden data in JPG, PNG, WebP and HEIC.Image Tools Image Blur ToolNewImage Blur Tool on Toolspire: Blur faces, number plates, text or the background in any photo. Blur, pixelate or black out areas, then download it full size.Image Tools Image Steganography ToolNewHide a secret message or file inside an image, protected with a password, and reveal hidden messages from PNG images. Free and private — without uploading.Security Tools Image WatermarkNewWatermark photos with your name, © text or logo in one go: choose position, size, angle and opacity, or repeat it across the image. Free, without uploading.Image Tools JSON to CSV ConverterNewJSON to CSV Converter on Toolspire: Convert JSON to CSV for Excel or Google Sheets: nested objects become columns, lists are kept and big numbers stay exact.Developer Tools Passport Size Photo MakerNewPassport Size Photo Maker on Toolspire. Make passport size photos online: India passport, PAN card, visa, US, UK and more. Face guide.Image Tools Password Strength CheckerNewPassword Strength Checker on Toolspire: Check how strong a password is: time to crack, common words and patterns it hides, tips to improve it.Security Tools CSV to JSON ConverterNewCSV to JSON Converter on Toolspire: Convert CSV or data pasted from Excel to JSON: auto-detected delimiter, real numbers and true/false.Developer Tools UUID GeneratorNewUUID Generator on Toolspire: Generate UUIDs (GUIDs) online: random v4, sortable v7, v1, and name-based v5 and v3 — one or 10,000 at a time.Developer Tools UTM BuilderNewUTM Builder on Toolspire. Build UTM campaign links for Google Analytics 4: presets for WhatsApp, Instagram, email and ads, the GA4 channel each lands.SEO & Marketing Tools URL Encoder / DecoderNewURL Encoder / Decoder on Toolspire: Encode or decode URLs and query strings online: %20, + and UTF-8 (Hindi, emoji) done right, errors pinpointed.Developer Tools Fancy Font GeneratorNewFancy Font Generator on Toolspire: Turn text into stylish fonts to copy and paste: bold, italic, cursive, bubble, gothic and more for Instagram bios, WhatsApp.Text Tools Base64 Encoder & DecoderNewBase64 Encoder & Decoder on Toolspire: Encode text or files to Base64 and decode Base64 back — UTF-8, URL-safe Base64URL, data URLs for images.Developer Tools Case ConverterNewCase Converter on Toolspire: Change text case online: UPPERCASE, lowercase, Title Case, Sentence case, and camelCase, snake_case or kebab-case for code.Text Tools Markdown Live PreviewerNewMarkdown Live Previewer on Toolspire: Write Markdown with a live preview: GitHub tables, task lists, alerts and highlighted code. Export to HTML or PDF — free.Developer Tools Compare PDFsNewCompare PDFs on Toolspire. Compare two PDFs online and see what changed: added and removed words highlighted, plus a page-by-page visual diff.PDF Tools PDF Page OrganizerNewRearrange PDF pages online: drag to reorder, rotate, delete, duplicate, add blank pages or pages from other PDFs. Free, private, without uploading, with undo.PDF Tools Add Page Numbers to PDFNewAdd page numbers to a PDF online: 1, Page 1 of 10, Roman numerals or your own format, in any corner. Skip the cover, number from any page. Free.PDF Tools Crop PDFNewCrop PDF pages online: drag a box or auto-detect white margins, then crop one page, some or all. Free, private, without uploading.PDF Tools Sign PDFNewSign a PDF on your device: draw, type or upload your signature, add initials and the date, and place them on any page. Private — nothing is uploaded.PDF Tools JSON to XML ConverterNewConvert JSON to XML online: attributes, text, arrays and nested data, with a root element, CDATA and pretty or minified output. Free and private.Developer Tools Cron Expression GeneratorNewCron Expression Generator on Toolspire: Build and explain cron expressions in plain English with next run times. Supports Linux crontab, Quartz.Developer Tools CSS to Tailwind ConverterNewCSS to Tailwind Converter on Toolspire. Convert CSS to Tailwind classes online: hover, media queries, dark mode and gradients become variants.Developer Tools Hash GeneratorNewGenerate MD5, SHA-1, SHA-256, SHA-512, SHA-3, BLAKE3, CRC32 and HMAC hashes of text or files, and verify checksums. Free, fast and private — without uploading.Developer Tools Age CalculatorNewAge Calculator on Toolspire. Calculate your exact age in years, months and days, the next birthday countdown and age on any date.Calculators SVG to PNG, JPG & WebP ConverterNewConvert SVG to PNG, JPG or WebP online at any size — 1x, 2x, 3x or exact pixels — with a transparent or coloured background. Batch convert, free.Image Tools PPK to PEM ConverterNewConvert a PuTTY.ppk private key to PEM or OpenSSH format online, with or without a passphrase. Supports PPK v2 and v3, RSA, ECDSA and Ed25519.Security Tools PEM to PPK ConverterNewConvert a PEM or OpenSSH private key (id_rsa, AWS.pem) to a PuTTY.ppk file online — PPK v3 or v2, with an optional passphrase. Free, private.Security Tools QR Code ScannerNewQR Code Scanner on Toolspire. Scan QR codes online with your camera or from a photo or screenshot. Shows links safely, UPI payments.QR & Barcode Tools Barcode ScannerNewBarcode Scanner on Toolspire: Scan barcodes online with your camera or from a photo: EAN-13, UPC, Code 128, Code 39, ISBN, DataMatrix and PDF417.QR & Barcode Tools Random Name PickerNewRandom Name Picker on Toolspire. Pick random names with a spinning wheel: one or several winners, no repeats, and random groups. Fair, private and free.Education Tools CSV to Interactive ChartNewCSV to Interactive Chart on Toolspire: Turn CSV or Excel data into an interactive bar, line, area, pie or scatter chart online. Group and sum rows.Developer Tools Website SEO CheckerNewWebsite SEO Checker on Toolspire: Audit any page’s title, meta description, headings, canonical, robots.txt, schema, Open Graph and AI crawler access.SEO & Marketing Tools IP Subnet CalculatorNewIP subnet calculator for IPv4 and IPv6: network, broadcast, host range, mask and wildcard from any CIDR, plus subnetting, VLSM and route summarisation.Internet & Network Tools Internet Speed TestNewCheck download and upload speed, ping, jitter and bufferbloat on Wi-Fi, broadband or mobile data — no app, with a data saver mode.Internet & Network Tools JWT DebuggerNewJWT Debugger on Toolspire: Decode any JWT and verify its signature on your device: header, claims and expiry explained; HS256, RS256.Developer Tools JWT EncoderNewCreate and sign JWTs on your device with HS256, RS256, PS256, ES256 or EdDSA: edit claims, set expiry, generate keys and a JWKS. Keys never leave your device.Developer Tools OMR Sheet GeneratorNewOMR Sheet Generator on Toolspire. Make printable OMR answer sheets free: up to 300 questions, 4 or 5 options, roll number bubbles.Education Tools Sitemap GeneratorNewSitemap Generator on Toolspire: XML sitemap generator: crawl your site or paste URLs, skip noindex, redirected and robots.txt-blocked pages.SEO & Marketing Tools Robots.txt GeneratorNewRobots.txt Generator on Toolspire. Create a robots.txt file free: block admin pages, AI training bots like GPTBot or SEO crawlers, add your sitemap.SEO & Marketing Tools Markdown to HTML ConverterNewMarkdown to HTML Converter on Toolspire: Convert Markdown to clean HTML online: GitHub tables, task lists and highlighted code, as a snippet or full page.Developer Tools Resume BuilderNewResume builder with 4 ATS-friendly templates: fill in your details, see a live preview, and download a PDF or Word file. without an account and no watermark.Career Tools Tic Tac ToeNewPlay Tic Tac Toe here against the computer — Easy, Medium or unbeatable Hard — or with a friend on one device. 3×3 to 6×6 boards. without an account.Games Image Color PickerNewImage Color Picker on Toolspire. Pick colours from any image: get HEX, RGB, HSL and CMYK codes with a zoom loupe, plus the image’s colour palette. Free.Image Tools Image to Grayscale ConverterNewImage to Grayscale Converter on Toolspire: Convert images to grayscale or black and white online: pick the method, adjust contrast, add sepia.Image Tools Crop ImageNewCrop Image on Toolspire. Crop images online to any size or ratio: 1:1, 16:9, Instagram and YouTube sizes, circle crop, rotate, flip and straighten. Free.Image Tools Favicon GeneratorNewFavicon Generator on Toolspire. Create a favicon from an image, text or emoji: get favicon.ico, SVG, Apple touch and Android icons.Image Tools Unit ConverterNewUnit Converter on Toolspire: Convert length, weight, area, volume, temperature, speed, data and 8 more quantities — including guntha, bigha, tola and lakh.Converters Unix Timestamp ConverterNewUnix Timestamp Converter on Toolspire. Convert Unix epoch time to a date in any time zone and back. Detects seconds, ms, µs and ns; also Excel.Converters Emoji & Kaomoji PickerNewEmoji & Kaomoji Picker on Toolspire. Search and copy every emoji, 200 kaomoji like ¯\_(ツ)_/¯ and 270+ text symbols with one click. Skin tones.Text Tools GST Invoice GeneratorNewMake GST tax invoices on your device: CGST, SGST or IGST worked out, GSTIN check, HSN summary and a UPI QR code. Download a PDF — free, without an account.Business Tools Salary Slip GeneratorNewSalary Slip Generator on Toolspire: Make monthly salary slips as PDF: earnings, PF, ESI, professional tax and TDS worked out, loss of pay and net pay in words.Business Tools Bingo Card GeneratorNewBingo Card Generator on Toolspire. Make printable bingo cards, Tambola (Housie) tickets or word bingo — unique and numbered.Games Coin FlipNewCoin Flip on Toolspire: Flip a coin online: a fair 50/50 heads or tails toss with a 3D coin. Flip up to 10 coins, play best of 3.Games ATS Resume CheckerNewSee what applicant tracking systems read from your PDF or Word resume, get a score with clear fixes, and match it to any job.Career Tools URL ShortenerNewMake short links with a custom ending, QR code, password, expiry and click stats — or check where any short link really goes. Open URL Shortener on Toolspire.SEO & Marketing Tools Typing Speed TestNewTyping speed test in English and Hindi: check your WPM and accuracy, practise with passages, and take an exam-style test with full and half mistakes.Education Tools SVG OptimizerNewOptimise SVG files online with SVGO: smaller icons and logos with a side-by-side preview, batch ZIP download, data URI, CSS and React output.Image Tools SudokuNewSudoku on Toolspire: Play free Sudoku online: easy to expert puzzles with one solution, notes, hints that explain the logic, a daily puzzle.Games Pixel-Perfect Screen RulerNewPixel-Perfect Screen Ruler on Toolspire: Screen ruler: a real-size cm and inch ruler calibrated with a bank card.Developer Tools Regex TesterNewRegex Tester on Toolspire: Live match highlighting, groups, replace, a plain-English explanation, unit tests and code for Python, PHP, Java, C# and Go.Developer Tools Hex to ASCII ConverterNewHex to ASCII Converter on Toolspire: Convert hex to ASCII or UTF-8 text and text to hex as you type. Reads 0x, \x and spaced hex.Developer Tools Binary to Text ConverterNewBinary to Text Converter on Toolspire: Translate binary code to text and text to binary, live. Handles spaced or joined 8-bit bytes, UTF-8 Hindi and emoji.Developer Tools HMAC GeneratorNewHMAC Generator on Toolspire: Generate HMAC-SHA256, SHA-512, SHA-1 or MD5 in hex or Base64, and verify GitHub, Stripe, Slack.Developer Tools Bcrypt Generator & CheckerNewGenerate bcrypt hashes with cost 4–16 and $2a/$2b/$2y prefixes, or check a password against a bcrypt hash. Explains each part. Runs on your device only.Security Tools Marriage Biodata MakerNewMarriage Biodata Maker on Toolspire. Make a marriage biodata with photo in English, Hindi or Marathi — rashi, nakshatra, gotra, family details.Career Tools MinesweeperNewPlay Minesweeper : Beginner, Intermediate, Expert or custom boards, a safe first click, no-guess boards that never need luck, hints and best times.Games 2048 GameNew2048 Game on Toolspire: Play 2048 : swipe or use the arrow keys to join tiles. Undo, AI hints, an auto-play AI, 3×3 to 6×6 boards and your best score saved.Games Scientific CalculatorNewTrig in degrees or radians, logs, powers, roots, factorial, nCr and nPr, fractions, memory and history. Works on phones.Calculators FD CalculatorNewFD Calculator on Toolspire: Calculate FD maturity and interest with quarterly compounding, monthly or quarterly payouts, senior citizen rates, tax and TDS.Calculators RD CalculatorNewRD Calculator on Toolspire: Calculate RD maturity amount and interest for any monthly deposit, rate and tenure.Calculators SIP CalculatorNewSIP Calculator on Toolspire: Calculate SIP returns for any monthly investment, rate and period — with yearly step-up, a lump sum, inflation.Calculators Percentage CalculatorNewPercentage Calculator on Toolspire: X% of a number, one number as a percent of another, percentage increase or decrease, marks and discounts — with the steps.Calculators PPF CalculatorNewPPF Calculator on Toolspire: Calculate PPF maturity and interest for yearly or monthly deposits at 7.1% or any rate — with 5-year extensions.Calculators Kundli MakerNewKundli Maker on Toolspire. Make a free janam kundli online by date, time and place of birth: lagna, Chandra and Navamsa charts, planet positions, nakshatra.Calculators Credit Card Payoff CalculatorNewCredit Card Payoff Calculator on Toolspire: See how long it takes to pay off a credit card and how much interest you pay — with 18% GST.Calculators Land Area ConverterNewLand Area Converter on Toolspire. Convert land area in India: bigha, biswa, katha, kanal, marla, guntha, cent, gaj, acre and hectare.Converters Luxembourg Salary CalculatorNewLuxembourg Salary Calculator on Toolspire. Luxembourg gross to net salary calculator for 2026: income tax in class 1, 1a or 2, social contributions.Calculators GPA & CGPA CalculatorNewGPA & CGPA Calculator on Toolspire: Calculate SGPA, GPA and CGPA from credits and grades, convert CGPA to percentage with your university’s formula.Calculators GST CalculatorNewGST Calculator on Toolspire. GST calculator for India: add or remove GST at 5%, 18% or 40%, split CGST, SGST and IGST.Calculators Exam Seating Arrangement PlannerNewExam Seating Arrangement Planner on Toolspire. Plan exam seating free: mix classes so no two from the same group sit together, then print seating charts.Education Tools Mic TesterNewMic Tester on Toolspire. Test your microphone online: a live sound level, waveform and spectrum, record and play back a clip, and fix a mic that is muted.Device Tests Webcam TesterNewWebcam Tester on Toolspire. Test your webcam online: see the live picture, resolution, megapixels and frame rate, take a photo or record a clip.Device Tests Speaker TesterNewSpeaker Tester on Toolspire. Play a tone in the left speaker, the right, or both, then sweep from bass to treble.Device Tests Keyboard TesterNewPress every key and see it light up. The test marks keys that stick, counts repeats, and never sends what you type anywhere. Open Keyboard Tester on Toolspire.Device Tests Mouse TesterNewClick, right-click, scroll and double-click in the pad. The test counts each button and shows where the pointer is. Open Mouse Tester on Toolspire.Device Tests Dead Pixel TestNewDead Pixel Test on Toolspire. Fill the screen with solid colours and a fine grid to spot dead, stuck or bright pixels. Nothing about your display is uploaded.Device Tests Touch Screen TestNewTouch Screen Test on Toolspire: Touch the corners and the centre, and see every finger the screen reports. Multi-touch stays in this tab and is not uploaded.Device Tests Responsive Design TesterNewResponsive Design Tester on Toolspire: Test a website on phone, tablet, laptop and desktop screen sizes side by side. Works with localhost and pasted HTML.Developer Tools SSH Key GeneratorNewGenerate SSH keys on your device: Ed25519, RSA 4096 or ECDSA, with a passphrase, in OpenSSH, PEM or PuTTY.ppk format. Nothing is sent to a server.Security Tools JSON to TypeScriptNewGenerate TypeScript interfaces, types or Zod schemas from JSON online. Finds optional properties, unions and nested types. Free, private, without uploading.Developer Tools JSON to YAML ConverterNewJSON to YAML Converter on Toolspire. Convert JSON to YAML and YAML to JSON online. Quotes yes, no and 0755 so every parser reads them the same.Developer Tools YAML to XML ConverterNewYAML to XML Converter on Toolspire: Convert YAML to XML and XML to YAML online. Handles attributes, lists, anchors and the root element.Developer Tools .htaccess GeneratorNew.htaccess generator for Apache 2.4: 301 redirects, force HTTPS and www, security headers, password protection, compression and caching, each explained.Developer Tools Chemical Equation BalancerNewChemical Equation Balancer on Toolspire. Balance any chemical equation online, redox and ionic included. See the atom count on each side, molar masses.Education Tools Electron Configuration BuilderNewElectron Configuration Builder on Toolspire: Electron configuration of any element or ion: full and noble-gas form, orbital diagram.Education Tools Markdown to NotionNewMarkdown to Notion on Toolspire: Convert Markdown to Notion: preview the blocks, copy formatted text to paste into a page.Developer Tools Dofollow Nofollow Link CheckerNewDofollow Nofollow Link Checker on Toolspire: See which links on a page are dofollow or nofollow. Lists every link with its rel, anchor text and type.SEO & Marketing Tools CSS Glassmorphism GeneratorNewCSS Glassmorphism Generator on Toolspire: Glassmorphism generator: design frosted glass with blur, tint, border and grain, check text contrast live.CSS Tools CSS Neumorphism GeneratorNewCSS Neumorphism Generator on Toolspire: Neumorphism generator: soft UI box-shadows from any colour and light angle, with contrast checks, pressed states.CSS Tools Bento Grid GeneratorNewBento Grid Generator on Toolspire: Draw tiles with the mouse, preview desktop, tablet and phone, and copy responsive CSS Grid, Tailwind or React code.CSS Tools Scroll Animation GeneratorNewFade, slide, zoom and reveal effects with CSS scroll-driven animations, parallax and progress bars, plus a Firefox fallback.CSS Tools Half-Life CalculatorNewHalf-Life Calculator on Toolspire: Find the amount left, starting amount, time or half-life with the working shown.Education Tools Radioactive Decay SimulatorNewRadioactive Decay Simulator on Toolspire: Watch up to 10,000 atoms decay at random, compare with the half-life curve.Education Tools 3D Molecular Structure ViewerNew3D Molecular Structure Viewer on Toolspire: 3D molecule viewer: look up any compound or protein by name, SMILES or PDB ID, or open PDB, SDF and XYZ files.Education Tools CSS Box Shadow GeneratorNewCSS box-shadow generator: build smooth layered shadows, edit each layer, start from Tailwind or Material presets, and copy CSS, Tailwind or React.CSS Tools Poster PrinterNewSplit a picture or PDF page across A4 or Letter sheets with overlap, cut marks and labels, and print it big at home. Nothing is uploaded.Image Tools Online TeleprompterNewOnline Teleprompter on Toolspire: Teleprompter: paste your script, set the speed or let it follow your voice. No account is required.Text Tools Online NotepadNewOnline Notepad on Toolspire: Notepad that saves as you type, right on your device: many notes, search, find and replace, open and save text files.Text Tools Attendance CalculatorNewYour attendance %, how many classes you can skip or must attend to reach 75%, subject-wise tracking and a term planner.Calculators Graph Paper GeneratorNewGraph Paper Generator on Toolspire: Printable graph paper: square, dot, isometric, hexagon, polar, log, coordinate plane and lined paper in A4 or Letter.Education Tools Car Loan EMI CalculatorNewCar loan EMI calculator for India: EMI on the on-road price, the real cost of a flat rate, processing fee and APR, tenure comparison and early closure.Calculators Home Loan EMI CalculatorNewHome Loan EMI Calculator on Toolspire: EMI, interest and schedule, prepayments that cut years off, rate changes, RBI LTV limits.Calculators Income Tax CalculatorNewIncome tax calculator for India, FY 2026-27 and 2025-26: compare the new and old regimes with HRA, 80C, 80D, NPS and home loan, slab by slab.Calculators Student Loan Payoff & Refinance CalculatorNewStudent Loan Payoff & Refinance Calculator on Toolspire: Student loan payoff calculator: add every loan, pay extra with the avalanche or snowball method.Calculators Mortgage CalculatorNewMortgage Calculator on Toolspire: US mortgage calculator with PMI, property tax, home insurance and HOA: monthly payment, when PMI ends.Calculators Auto Loan CalculatorNewAuto Loan Calculator on Toolspire: US auto loan calculator with trade-in, payoff owed, sales tax, rebates and fees: monthly payment, out-the-door price.Calculators Interactive Periodic TableNewInteractive Periodic Table on Toolspire. Interactive periodic table of all 118 elements: properties, electron configurations, trend heat maps.Education Tools CSS Flexbox & Grid PlaygroundNewCSS Flexbox & Grid Playground on Toolspire: Learn and build CSS flexbox and grid layouts visually: try every property, watch items move, draw grid areas.CSS Tools Printable ID Card MakerNewPrintable ID Card Maker on Toolspire: Make printable ID cards with photo, logo, QR code or barcode: employee, student, visitor and event templates.Business Tools Luxembourg Invoice GeneratorNewLuxembourg Invoice Generator on Toolspire. Make Luxembourg invoices with every mention the VAT law requires: 17/14/8/3% TVA, reverse charge, franchise, RCS.Business Tools Connect FourNewConnect Four on Toolspire: Play Connect Four here: drop discs and get four in a row against the computer — Easy, Medium or Hard — or a friend on one device.Games ReversiNewPlay Reversi here — the disc-flipping strategy game — against the computer (Easy, Medium, Hard) or a friend. 6×6, 8×8 or 10×10 boards. without an account.Games CheckersNewPlay checkers here against the computer or a friend: American/English checkers plus international, Brazilian and Russian draughts. without an account.Games Snake GameNewPlay the classic Snake game here: eat apples, grow longer and dodge walls and your own tail. Mazes, wrap-around, 4 speeds and swipe controls.Games SolitaireNewPlay classic Klondike solitaire here: draw 1 or draw 3, Vegas scoring, winnable deals, hints, undo and a daily deal. No download, without an account.Games Mahjong SolitaireNewMahjong Solitaire on Toolspire: Play mahjong solitaire here: the classic 144-tile turtle and three more layouts, every deal winnable, with hints, shuffle.Games Word GuessNewGuess the hidden word in six tries: a free 5-letter word game with unlimited play, a daily word, 4- and 6-letter modes, hard mode and stats.Games ChessNewPlay chess here against the computer at five levels, from beginner to master, or with a friend on one screen. Hints, undo, move list, PGN and FEN.Games Spider SolitaireNewPlay Spider Solitaire here with 1, 2 or 4 suits: build king-to-ace runs to clear the table. Undo, hints, Windows scoring and stats. No download.Games Block PuzzleNewPlay a free block puzzle game online: drag blocks onto the grid and fill rows and columns to clear them. Combos, hints, 8×8 or 10×10 board. without an account.Games FreeCellNewPlay FreeCell solitaire here with the same numbered deals as Microsoft FreeCell (1 to 1,000,000). Hints, undo, a solver and stats. without an account.Games Dinosaur GameNewPlay the dinosaur running game here: jump the cacti, duck the flying pterosaurs and beat your high score. Works with keys, mouse or touch.Games Bubble PopNewPlay a free bubble shooting game online: aim, bounce off the walls and match three or more bubbles to pop them. Levels, aiming guide, without an account.Games LudoNewPlay Ludo here for 2 to 4 players: against the computer or with friends on one device. Star safe squares, captures, extra rolls on a six. without an account.Games HangmanNewPlay Hangman here: guess the word letter by letter before the drawing is finished. Six categories, three levels, a two-player mode. without an account.Games Snakes and LaddersNewSnakes and Ladders on Toolspire: Play Snakes and Ladders here: against the computer or with friends on one device. Four boards, house rules for 100 and sixes.Games Word SearchNewWord Search on Toolspire: Play word search here: 14 themes, a daily puzzle and four grid sizes. No account is required.Games Memory GameNewPlay the memory game here: turn over cards and find the pairs. 11 card sets for kids and adults, 6 to 18 pairs, vs the computer or friends. without an account.Games Jigsaw PuzzleNewPlay jigsaw puzzles here: famous paintings like The Starry Night, or turn your own photo into a puzzle. 12 to 150 pieces that snap together.Games Number to WordsNewNumber to Words on Toolspire: Turn an amount into words for a cheque or invoice: Indian lakh and crore, or millions.Calculators Compound Interest CalculatorNewCompound Interest Calculator on Toolspire: See how a lump sum grows with yearly, quarterly, monthly or daily compounding.Calculators Discount CalculatorNewDiscount Calculator on Toolspire. Work out a sale price, the rupees you save, and the real percent off when two discounts are stacked or you only know the was.Calculators Date Difference CalculatorNewDate Difference Calculator on Toolspire: Count the years, months, days and total days between two dates. No account is required.Calculators CAGR CalculatorNewFind the compound annual growth rate from a starting value, an ending value and the number of years, plus the total gain. Open CAGR Calculator on Toolspire.Calculators Gratuity CalculatorNewGratuity Calculator on Toolspire. Estimate gratuity from last drawn basic plus DA and years of service, using 15/26.Calculators HRA CalculatorNewFind house rent allowance exemption as the least of actual HRA, rent minus 10% of basic, and 50% or 40% of basic. Open HRA Calculator on Toolspire.Calculators In-hand Salary CalculatorNewIn-hand Salary Calculator on Toolspire: Turn annual CTC into monthly in-hand pay under the new tax regime, after employee PF, professional tax and income tax.Calculators Fuel Cost CalculatorNewFuel Cost Calculator on Toolspire: Estimate litres and rupees for a drive from distance, mileage and the price per litre.Calculators Electricity Bill CalculatorNewElectricity Bill Calculator on Toolspire. Estimate a power bill from units and up to three slab rates plus a fixed charge. Type your state board’s own rates.Calculators Calorie CalculatorNewCalorie Calculator on Toolspire. Estimate daily calories with the Mifflin–St Jeor equation, an activity level.Calculators Pregnancy Due Date CalculatorNewPregnancy Due Date Calculator on Toolspire. Estimate a due date as 280 days after the first day of the last period.Calculators Lorem Ipsum GeneratorNewLorem Ipsum Generator on Toolspire. Generate lorem ipsum paragraphs for a mockup. Choose how many paragraphs and sentences.Text Tools Duplicate Line RemoverNewDuplicate Line Remover on Toolspire: Remove repeated lines from a list, with options to ignore case, trim spaces, drop blank lines and sort what remains.Text Tools Morse Code TranslatorNewMorse Code Translator on Toolspire: Translate text into Morse code and Morse back into text. Letters are separated by spaces and words by a slash.Text Tools Roman Numeral ConverterNewRoman Numeral Converter on Toolspire: Convert a whole number from 1 to 3999 into a Roman numeral, or check a numeral and read it back as a number.Converters Slug GeneratorNewSlug Generator on Toolspire: Make a URL slug from a title: lowercase, accents removed, spaces and punctuation turned into hyphens or underscores.Text Tools PX to REM ConverterNewPX to REM Converter on Toolspire. Convert pixels to rem and rem back to pixels using your root font size. No account is required.CSS Tools Color Contrast CheckerNewColor Contrast Checker on Toolspire. Check the contrast ratio of a text colour on a background and whether it passes WCAG AA and AAA for normal and large text.CSS Tools CSS Gradient GeneratorNewCSS Gradient Generator on Toolspire. Build a linear or radial CSS gradient from hex colours, preview it. No account is required.CSS Tools Simple Interest CalculatorNewSimple Interest Calculator on Toolspire. Calculate simple interest from principal, annual rate and time in years, and see the total amount you repay or receive.Calculators Tip CalculatorNewAdd a tip percentage to a restaurant bill and split the total evenly across the number of people at the table. Open Tip Calculator on Toolspire.Calculators Profit Margin CalculatorNewProfit Margin Calculator on Toolspire. From cost and selling price, see profit, margin on the selling price, and markup on the cost.Calculators Break-even CalculatorNewBreak-even Calculator on Toolspire: Find how many units you must sell to cover fixed costs when you know the price and the variable cost of one unit.Calculators Overtime Pay CalculatorNewOvertime Pay Calculator on Toolspire: Add overtime to a wage: regular hours at the base rate and extra hours at a multiplier such as 1.5 or 2.Calculators Hourly Wage CalculatorNewHourly Wage Calculator on Toolspire: Convert a yearly salary into an hourly wage, or an hourly wage into yearly pay, using hours worked per week and 52 weeks.Calculators Savings Goal CalculatorNewSavings Goal Calculator on Toolspire. See how many months of saving it takes to reach a target, with an optional annual return on the balance you already have.Calculators Rule of 72 CalculatorNewRule of 72 Calculator on Toolspire: Estimate how many years money takes to double at a fixed annual rate, using the rule of 72 and the exact compound formula.Calculators SWP CalculatorNewSWP Calculator on Toolspire: See what a monthly withdrawal does to a corpus at a yearly return: ending balance, total withdrawn, and if the money runs out.Calculators EPF CalculatorNewEstimate an EPF corpus from basic pay, 12% employee share, employer EPF after EPS, and a yearly interest rate you can edit. Open EPF Calculator on Toolspire.Calculators Rent Affordability CalculatorNewRent Affordability Calculator on Toolspire: Turn a monthly income into a rent budget using a share of income, usually 30 percent.Calculators Split Bill CalculatorNewSplit Bill Calculator on Toolspire: Divide a bill across friends, with an optional tip, and see the exact amount each person should transfer.Calculators Ratio CalculatorNewSimplify two numbers to the smallest whole ratio and see what percent each part is of the total. The maths stays on your device.Calculators Quadratic Equation CalculatorNewQuadratic Equation Calculator on Toolspire. Solve a quadratic equation for its real roots from a, b and c. No account is required.Calculators Pythagorean CalculatorNewPythagorean Calculator on Toolspire: Find the hypotenuse of a right triangle from the two legs. No account is required.Calculators Circle CalculatorNewCircle Calculator on Toolspire: From a radius, get the area, circumference and diameter of a circle. The area uses π × radius squared.Calculators Inflation CalculatorNewInflation Calculator on Toolspire: See what today’s price becomes after years of inflation. No account is required.Calculators Paint CalculatorNewPaint Calculator on Toolspire: Estimate litres of paint for a rectangular room from length, width, height, coats and how many square metres a litre covers.Calculators Tile CalculatorNewTile Calculator on Toolspire: Count tiles for a rectangular floor from the room size and the tile size, then add a waste percentage for cuts and breakage.Calculators Down Payment CalculatorNewFrom a home or car price and a down-payment percent, see the cash you pay now and the loan that remains. The maths stays on your device.Calculators Ideal Weight CalculatorNewIdeal Weight Calculator on Toolspire: Estimate an adult ideal weight from height with the Devine formula, for men and for women, in kilograms.Calculators Water Intake CalculatorNewWater Intake Calculator on Toolspire: Estimate a daily water target from body weight, about 35 ml per kilogram, with an optional extra for exercise.Calculators Dividend Yield CalculatorNewDivide the annual dividend per share by the current share price to get the dividend yield as a percent. The maths stays on your device.Calculators PE Ratio CalculatorNewPE Ratio Calculator on Toolspire. Calculate the price-to-earnings ratio from a share price and earnings per share, and the earnings yield that is its inverse.Calculators ROI CalculatorNewROI Calculator on Toolspire: Measure return on investment from what you paid and what you got back, as a percent of the original cost.Calculators Pace CalculatorNewConvert a run or ride into pace and speed from the distance and the time in minutes. The maths stays on your device. Open Pace Calculator on Toolspire.Calculators Concrete CalculatorNewWork out concrete volume in cubic metres from length, width and depth. Use metres for every side. The maths stays on your device.Calculators Loan to Value CalculatorNewLoan to Value Calculator on Toolspire: Divide the loan by the property price to get the loan-to-value ratio lenders use when they price a mortgage.Calculators Cap Rate CalculatorNewCalculate a property cap rate by dividing yearly net operating income by the price, before mortgage payments. The maths stays on your device.Calculators Fraction CalculatorNewFraction Calculator on Toolspire: Add, subtract, multiply or divide two fractions and see the result in lowest terms, plus the decimal value.Calculators Average CalculatorNewPaste a list of numbers and get the mean, median, minimum, maximum and how many values were counted. The maths stays on your device.Calculators Sleep Cycle CalculatorNewSleep Cycle Calculator on Toolspire: Pick a wake-up time and see bedtimes that land on 90-minute sleep cycles, with a few minutes to fall asleep.Calculators Business Days CalculatorNewBusiness Days Calculator on Toolspire: Count Monday-to-Friday days between two dates. Weekends are skipped. Public holidays are not.Calculators Text ReverserNewReverse a piece of text character by character, or flip the order of the words and leave each word itself intact. Open Text Reverser on Toolspire.Text Tools Palindrome CheckerNewPalindrome Checker on Toolspire: Check whether a word or sentence reads the same forwards and backwards. Spaces, punctuation and capital letters are ignored.Text Tools Extra Space RemoverNewExtra Space Remover on Toolspire: Collapse repeated spaces and tabs, trim each line, and leave a single break between lines.Text Tools HTML Entity EncoderNewEscape <, >, & and quotes so text is safe inside HTML, or decode those entities back into characters. The maths stays on your device.Developer Tools Find and ReplaceNewFind and Replace on Toolspire. Find a word or phrase and replace every match, with an option to ignore capital letters. The count of replacements is shown.Text Tools Number Base ConverterNewConvert a whole number between bases from 2 to 36, including binary, octal, decimal and hexadecimal. The maths stays on your device.Converters Aspect Ratio CalculatorNewAspect Ratio Calculator on Toolspire: Simplify a width and height to a ratio such as 16:9, and scale that ratio to any new width or height.Calculators Data Size ConverterNewData Size Converter on Toolspire: Convert a file size between bytes, kilobytes, megabytes, gigabytes and terabytes using 1,024 units, the way computers count.Converters Color ConverterNewConvert a hex colour to RGB and HSL, or build a hex colour from red, green and blue values between 0 and 255. The maths stays on your device.CSS Tools Time Zone ConverterNewTime Zone Converter on Toolspire: Convert a date and clock time from one IANA time zone to another, using your browser’s time-zone database.Converters DPI CalculatorNewFind pixels per inch from a screen’s pixel width, pixel height and diagonal size in inches. The maths stays on your device. Open DPI Calculator on Toolspire.Calculators Random Number GeneratorNewRandom Number Generator on Toolspire: Generate one or more random whole numbers between a minimum and a maximum. Each draw uses your browser’s random source.Calculators Dice RollerNewRoll dice with 4, 6, 8, 10, 12, 20 or 100 sides and add the faces. Useful for a board game or a tabletop session. Open Dice Roller on Toolspire.Games Meta Tag GeneratorNewMeta Tag Generator on Toolspire. Build the HTML title, meta description and Open Graph tags for a page. No account is required.SEO & Marketing Tools Screen ResolutionNewScreen Resolution on Toolspire: See your screen resolution, the browser viewport and the device pixel ratio. Resize the window and the numbers follow.Device Tests Countdown TimerNewCountdown Timer on Toolspire: Count down to a date and time in days, hours, minutes and seconds. The clock updates while this tab is open.Calculators StopwatchNewStopwatch on Toolspire: A stopwatch in the browser with start, stop and lap. Lap times stay on the page until you reset. Nothing is saved.Calculators Step-up SIP CalculatorNewProject a monthly SIP that increases by a fixed percent each year, and separate the money you deposit from the gain. Open Step-up SIP Calculator on Toolspire.Calculators Lumpsum CalculatorNewLumpsum Calculator on Toolspire. See what a one-time investment can become after yearly compounding, and how much of the result is growth rather than principal.Calculators XIRR CalculatorNewXIRR Calculator on Toolspire. Work out the annualised return of irregular investments and payouts. This is the XIRR figure mutual-fund apps show for a SIP.Calculators Retirement Corpus CalculatorNewRetirement Corpus Calculator on Toolspire: Estimate the corpus a monthly investment can build before retirement.Calculators Emergency Fund CalculatorNewEmergency Fund Calculator on Toolspire. Turn monthly essential expenses into an emergency fund of 3, 6 or 12 months.Calculators Sukanya Samriddhi CalculatorNewSukanya Samriddhi Calculator on Toolspire: Estimate a Sukanya Samriddhi maturity after 15 yearly deposits and six silent years.Calculators Home Loan Eligibility CalculatorNewHome Loan Eligibility Calculator on Toolspire: Estimate a home loan from monthly income, existing EMIs, a FOIR share and the rate and tenure you would accept.Calculators Flat vs Reducing CalculatorNewFlat vs Reducing Calculator on Toolspire. Compare a flat-rate EMI with a reducing-balance EMI on the same principal, annual rate and tenure.Calculators NPS CalculatorNewProject an NPS corpus from a fixed monthly contribution and an annual return, then split it 60% lump sum and 40% annuity. Open NPS Calculator on Toolspire.Calculators Amortization Schedule CalculatorNewAmortization Schedule Calculator on Toolspire. Build a reducing-balance loan schedule: the EMI, total interest.Calculators VAT CalculatorNewAdd VAT to an exclusive price, and extract the VAT already hidden inside an inclusive price, at the percentage you type. Open VAT Calculator on Toolspire.Calculators Percentage Change CalculatorNewMeasure the percent rise or fall from an old number to a new number, using (new − old) ÷ old. The maths stays on your device.Calculators Sales Tax CalculatorNewSales Tax Calculator on Toolspire: Add sales tax to a sticker price, and see how much tax is already inside a price that includes it, at one local rate.Calculators LCM and HCF CalculatorNewLCM and HCF Calculator on Toolspire: Find the HCF and LCM of two integers with Euclid’s algorithm. LCM is the product divided by the HCF.Education Tools Prime FactorizationNewPrime Factorization on Toolspire: Split an integer from 2 up to one trillion into prime factors by trial division, and say so when the number itself is prime.Education Tools Factorial CalculatorNewFactorial Calculator on Toolspire. Calculate n factorial as an exact integer with BigInt, from 0! = 1 through 500!, and show how many digits the result has.Education Tools Permutation Combination CalculatorNewPermutation Combination Calculator on Toolspire: Calculate nPr and nCr with exact integers. Order counts for permutations and does not count for combinations.Education Tools Mean Median Mode CalculatorNewMean Median Mode Calculator on Toolspire: Find the mean, median and mode of a list of numbers. The mode is reported only when a value actually repeats.Education Tools Standard Deviation CalculatorNewStandard Deviation Calculator on Toolspire. Calculate the sample and population standard deviation of a list. No account is required.Education Tools Final Grade CalculatorNewFinal Grade Calculator on Toolspire: Find the score you still need on the remaining weight of a course to finish at a target percentage.Education Tools Weighted Grade CalculatorNewWeighted Grade Calculator on Toolspire. Average graded rows where each line is a score and a weight. The result is the weight-adjusted percent.Education Tools Heron's Formula CalculatorNewHeron's Formula Calculator on Toolspire: Find a triangle’s area from all three sides with Heron’s formula. No account is required.Education Tools Cylinder Volume CalculatorNewCalculate the volume of a right circular cylinder and its total surface area from radius and height. The maths stays on your device.Education Tools Square Root CalculatorNewSquare Root Calculator on Toolspire: Find the square root of a non-negative number and say whether that root is a whole number, a perfect square.Education Tools Day of Week CalculatorNewFind the weekday of a calendar date using UTC, so the answer does not shift when your laptop changes time zone. Open Day of Week Calculator on Toolspire.Calculators ISO Week NumberNewFind the ISO-8601 week number of a date, including the ISO year when the week belongs to the year next door. The maths stays on your device.Calculators Time Duration CalculatorNewTime Duration Calculator on Toolspire: Add or subtract two durations in hours and minutes, and normalise the result so minutes stay under 60.Converters Age Difference CalculatorNewFind the age gap between two birth dates in calendar years, months and days, plus the exact day count. The maths stays on your device.Calculators Military Time ConverterNewConvert 24-hour military time such as 14:30 into 2:30 PM, and show the 24-hour form back again. The maths stays on your device.Converters Leap Year CheckerNewCheck whether a year is a leap year: divisible by 4, except centuries, which must also be divisible by 400. The maths stays on your device.Education Tools One Rep Max CalculatorNewOne Rep Max Calculator on Toolspire. Estimate a one-rep max from a weight and the reps you lifted, using the Epley formula and the Brzycki formula side by side.Calculators Macro CalculatorNewMacro Calculator on Toolspire: Turn a calorie target and protein, carbohydrate and fat percentages into grams, using 4, 4 and 9 calories per gram.Calculators Body Fat CalculatorNewBody Fat Calculator on Toolspire: Estimate body-fat percentage with the US Navy circumference method, typing height, neck, waist and hip in centimetres.Calculators Target Heart Rate CalculatorNewEstimate a maximum heart rate as 220 minus age, then list the 50, 60, 70 and 80 percent training zones. The maths stays on your device.Calculators Ovulation CalculatorNewEstimate an ovulation date as the last period plus cycle length minus 14 days, and mark a fertile window around it. Open Ovulation Calculator on Toolspire.Calculators Text Diff CheckerNewText Diff Checker on Toolspire: Compare two texts line by line with a longest-common-subsequence diff, and list the lines that were removed or added.Text Tools SERP Snippet PreviewNewSERP Snippet Preview on Toolspire: Preview a page title and meta description and flag a title over 60 characters or a description outside 110–160.SEO & Marketing Tools CSS Border Radius GeneratorNewCSS Border Radius Generator on Toolspire: Write a border-radius declaration from four corners, and collapse it to one value when every corner matches.CSS Tools CSS Clamp CalculatorNewBuild a CSS clamp() for a size that scales between two viewports, with a minimum and a maximum in pixels. The maths stays on your device.CSS Tools Mailto Link GeneratorNewMailto Link Generator on Toolspire: Build a mailto link with a percent-encoded subject and body, and refuse an address that has no @ and domain.Developer Tools HTML Table GeneratorNewTurn CSV or tab-separated rows into an HTML table, using the first row as the header and escaping <, > and &. The maths stays on your device.Developer Tools What Is My BrowserNewWhat Is My Browser on Toolspire: Read the browser name and major version from a user-agent string, checking Edge before Chrome and Chrome before Safari.Device Tests Unit Price CalculatorNewUnit Price Calculator on Toolspire: Divide a pack price by the quantity inside it, then price a different quantity at that same rate per unit.Calculators Reading Time CalculatorNewReading Time Calculator on Toolspire: Estimate how long a text takes to read at 238 words per minute, plus a slower 200 and a speaking pace of 150.Text Tools Indian Comma SeparatorNewIndian Comma Separator on Toolspire: Group a number the Indian way: the last three digits, then pairs, so 1234567 becomes 12,34,567.Converters Random Team GeneratorNewRandom Team Generator on Toolspire: Shuffle a list of names with Fisher–Yates and deal them into teams, so the first names typed are not stuck together.Education Tools List RandomizerNewShuffle the lines of a list with Fisher–Yates, so each order of the items is equally likely. The maths stays on your device. Open List Randomizer on Toolspire.Text Tools Hashtag GeneratorNewTurn a caption into hashtags by keeping real words, dropping short stop-words, and prefixing each kept word with #. Open Hashtag Generator on Toolspire.Text Tools Speed Distance Time CalculatorNewSpeed Distance Time Calculator on Toolspire. Solve speed, distance or time by leaving exactly one of the three blank. Distance is kilometres, speed is km/h.Calculators Ohms Law CalculatorNewOhms Law Calculator on Toolspire: Solve volts, amps or ohms from V = I × R by leaving one box blank, and show the power in watts for that pair.Education Tools Download Time CalculatorNewDownload Time Calculator on Toolspire: Work out how long a file takes at a megabit link speed, using decimal bytes and one million bits per second.Internet & Network Tools Data Usage CalculatorNewData Usage Calculator on Toolspire: Turn a steady megabit rate and the hours you use it into gigabytes. One megabit is one million bits a second.Internet & Network Tools Uptime CalculatorNewUptime Calculator on Toolspire: Turn an availability percent such as 99.9 into downtime for a day, a 30-day month and a 365-day year. It is arithmetic.Internet & Network Tools Port Number LookupNewPort Number Lookup on Toolspire. Look up a well-known TCP or UDP port, or a service name such as SSH, HTTPS or MySQL, from a fixed list. No host is scanned.Internet & Network Tools MAC Address GeneratorNewMAC Address Generator on Toolspire. Check a MAC address, name the unicast and local-admin bits. No account is required.Internet & Network Tools CIDR Overlap CheckerNewCIDR Overlap Checker on Toolspire. Compare two IPv4 CIDR prefixes and report whether one contains the other, they are the same range, or they are disjoint.Internet & Network Tools IPv4 Address ConverterNewIPv4 Address Converter on Toolspire: Convert an IPv4 address between dotted decimal, a 32-bit integer, hexadecimal and dotted binary.Internet & Network Tools Punycode ConverterNewPunycode Converter on Toolspire. Convert an international domain name to ASCII punycode and back, using the xn-- prefix from RFC 3492.Internet & Network Tools Present Value CalculatorNewDiscount a future lump sum back to today with present value = future ÷ (1 + rate) raised to the number of years. Open Present Value Calculator on Toolspire.Calculators Effective Annual Rate CalculatorNewEffective Annual Rate Calculator on Toolspire: Turn a nominal annual rate and a compounding count into the effective annual rate, (1 + r/n)^n − 1.Calculators Sinking Fund CalculatorNewFind the equal year-end deposit that grows to a target, using payment = target × r ÷ ((1 + r)^years − 1). The maths stays on your device.Calculators Straight-Line DepreciationNewStraight-Line Depreciation on Toolspire: Spread an asset’s cost minus salvage in equal yearly depreciation: (cost − salvage) ÷ useful life.Calculators Declining Balance DepreciationNewApply a fixed percent to the opening book value, and show year-one depreciation plus the book value left. The maths stays on your device.Calculators Current Ratio CalculatorNewCurrent Ratio Calculator on Toolspire. Divide current assets by current liabilities. A result of 2 means there are two rupees of short-term assets per rupee.Calculators Quick Ratio CalculatorNewQuick Ratio Calculator on Toolspire. Subtract inventory from current assets, then divide by current liabilities. This is the acid-test ratio.Calculators Debt to Equity CalculatorNewDivide total debt by shareholders’ equity. 150 of debt and 100 of equity is a debt-to-equity ratio of 1.5. The maths stays on your device.Calculators Inventory Turnover CalculatorNewInventory Turnover Calculator on Toolspire: Divide cost of goods sold by average inventory, then turn that turnover into days on hand using a 365-day year.Calculators Days Sales OutstandingNewDays Sales Outstanding on Toolspire: Turn receivables and credit sales into days sales outstanding: receivables ÷ credit sales × 365.Calculators Payment Gateway Fee CalculatorNewPayment Gateway Fee Calculator on Toolspire: Add a percent fee and a fixed fee on a payment, and show what remains after that gateway charge.Calculators Freelancer Rate CalculatorNewFreelancer Rate Calculator on Toolspire: Gross up a desired annual take-home across billable hours and a tax percent.Calculators ROAS CalculatorNewDivide revenue attributed to ads by ad spend. A ROAS of 5 means ₹5 of revenue for each ₹1 of spend. The maths stays on your device.Calculators CTR CalculatorNewDivide clicks by impressions and multiply by 100. Fifty clicks on 1,000 impressions is a 5% click-through rate. Open CTR Calculator on Toolspire.Calculators CPM CalculatorNewCPM Calculator on Toolspire: Find cost per mille: ad spend ÷ impressions × 1,000. ₹200 for 10,000 impressions is a ₹20 CPM. The maths stays on your device.Calculators Conversion Rate CalculatorNewConversion Rate Calculator on Toolspire. Divide completed actions by visits and multiply by 100. Twenty-five actions from 500 visits is a 5% conversion rate.Calculators Churn Rate CalculatorNewDivide customers lost by customers at the start of the period. Ten lost from 200 is a 5% churn rate. The maths stays on your device.Calculators Customer Lifetime ValueNewCustomer Lifetime Value on Toolspire. Estimate a simple lifetime value as average revenue per customer divided by the churn rate. ₹50 at 5% churn is ₹1,000.Calculators Payback Period CalculatorNewPayback Period Calculator on Toolspire. Divide an upfront cost by the steady monthly net cash it returns. ₹12,000 recovered at ₹1,000 a month takes 12 months.Calculators NPV CalculatorNewNPV Calculator on Toolspire: Discount a run of equal year-end cash flows and subtract the upfront cost. The rate is yearly. The flows do not change.Calculators NSC CalculatorNewNSC Calculator on Toolspire: Compound a National Savings Certificate deposit annually for five years at the rate you type. The term is fixed at five years.Calculators Post Office MIS CalculatorNewPost Office MIS Calculator on Toolspire. Turn a principal and an annual rate into a monthly interest cheque: principal × rate ÷ 100 ÷ 12.Calculators Prorated Salary CalculatorNewProrated Salary Calculator on Toolspire: Prorate a monthly salary by days worked over the days in that month. ₹30,000 across 30 days is ₹1,000 a day.Calculators Leave Encashment CalculatorNewLeave Encashment Calculator on Toolspire: Value encashed leave as monthly basic ÷ 30 × leave days. ₹30,000 basic and 15 days is ₹15,000.Calculators Bonus CalculatorNewApply a bonus percent to basic pay, capped by a ceiling. ₹20,000 basic, 8.33% and a ₹7,000 ceiling uses ₹7,000 as the base. Open Bonus Calculator on Toolspire.Calculators Markup CalculatorNewMarkup Calculator on Toolspire: Add a markup percent to cost to get a selling price, and show the margin that markup becomes on the selling price.Calculators Logarithm CalculatorNewFind log of a positive number in any base above 0 and not 1. Log base 10 of 1,000 is 3. Log base 2 of 8 is 3. The maths stays on your device.Education Tools Exponent CalculatorNewRaise a base to a power. 2 to the 10th is 1,024. Integer powers use an exact integer path so 2^10 is not 1023.999. Open Exponent Calculator on Toolspire.Education Tools Modulo CalculatorNewModulo Calculator on Toolspire: Find the remainder when one integer is divided by another. 17 divided by 5 leaves remainder 2, because 5×3+2 = 17.Education Tools Arithmetic Sequence CalculatorNewArithmetic Sequence Calculator on Toolspire: Find the nth term and the sum of an arithmetic sequence. First term 2, difference 3.Education Tools Geometric Sequence CalculatorNewGeometric Sequence Calculator on Toolspire. Find the nth term and sum of a geometric sequence. First term 2, ratio 3.Education Tools Slope CalculatorNewFind the slope between two points: (y2 − y1) ÷ (x2 − x1). From (0, 0) to (2, 4) the slope is 2. The maths stays on your device.Education Tools Midpoint CalculatorNewMidpoint Calculator on Toolspire: Average the coordinates of two points. The midpoint of (0, 0) and (2, 4) is (1, 2). The maths stays on your device.Education Tools Distance Between PointsNewFind the straight-line distance between two points. From (0, 0) to (3, 4) the distance is 5, by Pythagoras. The maths stays on your device.Education Tools Trapezoid Area CalculatorNewTrapezoid Area Calculator on Toolspire: Find a trapezoid’s area from the two parallel sides and the height: (a + b) ÷ 2 × height.Education Tools Sphere Volume CalculatorNewSphere Volume Calculator on Toolspire: Calculate a sphere’s volume as 4/3 π r³ and its surface area as 4 π r². A unit sphere has volume about 4.1888.Education Tools Cone Volume CalculatorNewCone Volume Calculator on Toolspire: Calculate a right circular cone’s volume as one third π r² h. Radius 1 and height 3 give volume π, about 3.1416.Education Tools Law of Cosines CalculatorNewLaw of Cosines Calculator on Toolspire. Find the angle opposite side c from sides a, b and c. A 3-4-5 triangle has 90 degrees opposite the side of length 5.Education Tools Percent Error CalculatorNewPercent Error Calculator on Toolspire: Divide the absolute gap between a measured value and an accepted value by the accepted value.Education Tools Scientific Notation ConverterNewScientific Notation Converter on Toolspire: Write a number as a coefficient from 1 up to 10, times a power of 10. 12345 becomes 1.2345 × 10^4.Education Tools Significant Figures RounderNewSignificant Figures Rounder on Toolspire: Round a number to a chosen count of significant figures. 1.2345 to three significant figures is 1.23.Education Tools Molarity CalculatorNewDivide moles of solute by litres of solution. Half a mole in 2 litres is 0.25 mol/L. The maths stays on your device. Open Molarity Calculator on Toolspire.Education Tools Dilution CalculatorNewDilution Calculator on Toolspire: Find the volume of dilute solution from a stock: V2 = C1 × V1 ÷ C2. A 2 M stock, 50 mL, diluted to 0.5 M, makes 200 mL.Education Tools Density CalculatorNewDensity Calculator on Toolspire: Divide mass by volume. 10 grams in 2 millilitres has density 5 g/mL. The page does not convert the units you mix.Education Tools Boyle's Law CalculatorNewBoyle's Law Calculator on Toolspire. Solve the new volume from Boyle’s law: P1 × V1 = P2 × V2. One atmosphere and 2 litres, compressed to 2 atmospheres.Education Tools Kinetic Energy CalculatorNewKinetic Energy Calculator on Toolspire: Calculate translational kinetic energy as ½ m v². A 2 kg mass at 3 m/s has 9 joules of kinetic energy.Education Tools Gravitational Potential EnergyNewGravitational Potential Energy on Toolspire: Calculate gravitational potential energy as m g h. One kilogram, one metre, and g of 9.81 give 9.81 joules.Education Tools Force CalculatorNewCalculate net force as mass times acceleration. Two kilograms accelerating at 3 m/s² need a net force of 6 newtons. Open Force Calculator on Toolspire.Education Tools Wavelength CalculatorNewDivide the speed of light by a frequency in hertz. 299,792,458 Hz has a wavelength of exactly 1 metre in a vacuum. Open Wavelength Calculator on Toolspire.Education Tools Decibel CalculatorNewDecibel Calculator on Toolspire: Convert a power ratio to decibels with 10 log10(P2/P1). A power 100 times the reference is 20 dB, not 100 dB.Education Tools Resistor CalculatorNewResistor Calculator on Toolspire. Add two resistors in series, and compute their parallel pair with the product-over-sum rule.Education Tools Sort LinesNewSort lines with a case-sensitive alphabetical order and drop blanks. The lines b, a and C become C, then a, then b. Open Sort Lines on Toolspire.Text Tools Extract EmailsNewExtract Emails on Toolspire: Pull email-shaped addresses out of a paste. “Write ada@example.com today” yields ada@example.com, once, even if it is repeated.Text Tools Extract URLsNewPull http and https links out of a paste and strip a trailing period or comma. One link repeated twice is listed once. Open Extract URLs on Toolspire.Text Tools Word Frequency CounterNewCount words and list them most frequent first. “cat cat dog” reports cat twice and dog once. Case is folded. The maths stays on your device.Text Tools Anagram CheckerNewAnagram Checker on Toolspire: Check whether two phrases use the same letters. “listen” and “silent” are anagrams. Spaces and case are ignored.Text Tools NATO AlphabetNewSpell letters with the NATO phonetic alphabet. “hi” becomes Hotel India. Digits use the spoken NATO digit words. Open NATO Alphabet on Toolspire.Text Tools ROT13 EncoderNewRotate letters by 13 places. Hello becomes Uryyb, and Uryyb rotates back to Hello. Digits and spaces stay put. Open ROT13 Encoder on Toolspire.Text Tools Identifier Case ConverterNewIdentifier Case Converter on Toolspire: Split a phrase into words and write camelCase, PascalCase, snake_case and kebab-case.Text Tools Strip HTMLNewRemove HTML tags and decode &, <, > and  . “<p>Hi <b>there</b></p>” becomes “Hi there”. The maths stays on your device.Text Tools Remove Line BreaksNewRemove Line Breaks on Toolspire. Join lines into a single paragraph with spaces. A blank line becomes one space, not a paragraph gap.Text Tools Caesar CipherNewCaesar Cipher on Toolspire: Shift letters by a number of places. A shift of 1 turns Abz into Bca. A shift of 13 is ROT13. Digits stay put.Text Tools Zero Width RemoverNewZero Width Remover on Toolspire. Remove zero-width spaces, joiners, non-joiners and byte-order marks. No account is required.Text Tools Wrap TextNewWrap Text on Toolspire. Wrap text so each line is at most N characters, breaking at spaces when a word fits. Width 5 turns “hello world” into hello, then world.Text Tools CSS Box Model CalculatorNewCSS Box Model Calculator on Toolspire. Add padding and border to a content box under the default content-box model. Content 100 by 50.CSS Tools Rem to Px ConverterNewRem to Px Converter on Toolspire. Multiply a rem value by the root font size. 1.5 rem at a 16 px root is 24 px. The px-to-rem page divides.CSS Tools Vh to Px CalculatorNewTurn a vh length into pixels for a viewport you name. 50 vh of an 800 px tall viewport is 400 px. The maths stays on your device.CSS Tools Chmod CalculatorNewTurn a three-digit chmod mode into rwx letters. 755 is rwxr-xr-x. Each digit is owner, group, then everyone else. Open Chmod Calculator on Toolspire.Developer Tools Semver CompareNewSemver Compare on Toolspire. Compare two numeric versions major.minor.patch. 1.2.10 is newer than 1.2.3, because 10 is greater than 3 as a number, not as text.Developer Tools Modular Type ScaleNewMultiply a base size by a ratio raised to a step. 16 px times 1.25 squared is 25 px, two steps up a major-third scale. Open Modular Type Scale on Toolspire.CSS Tools CSS Filter GeneratorNewCSS Filter Generator on Toolspire. Build a CSS filter from a blur in pixels and a brightness percent. No account is required.CSS Tools CSS Transform GeneratorNewCSS Transform Generator on Toolspire. Build a CSS transform from degrees, a scale and a translate in pixels. 15 degrees.CSS Tools Cron ExplainerNewCron Explainer on Toolspire: Explain a five-field cron expression made of stars, numbers and */step. “0 9 * * 1” is 09:00 on Monday.Developer Tools Regex EscapeNewRegex Escape on Toolspire: Escape a string so a regular expression matches it literally. a+b becomes a\+b, and the plus is no longer “one or more”.Developer Tools ULID GeneratorNewBuild a 26-character ULID. The first 10 characters encode the time. The last 16 are randomness from Crockford base32. Open ULID Generator on Toolspire.Developer Tools Basic Auth GeneratorNewBasic Auth Generator on Toolspire: Build an HTTP Basic Authorization header. The RFC example Aladdin and “open sesame” is Basic plus a fixed base64 string.Developer Tools Keyword Density CheckerNewDivide whole-word matches of one keyword by the word count. “cat and cat” is two cats in three words, 66.67%. The maths stays on your device.SEO & Marketing Tools HTTP Status LookupNewHTTP Status Lookup on Toolspire. Look up a common HTTP status code. 404 is Not Found. 418 is a teapot. Codes outside the short list are named as not on it.Developer Tools MIME Type LookupNewMIME Type Lookup on Toolspire. Map a file extension to a common MIME type. png is image/png. pdf is application/pdf. An unknown extension is said to be unknown.Developer Tools Occurrence CounterNewCount a whole word in a text. “red red RED” contains red twice with case respected, and three times if case is ignored. Open Occurrence Counter on Toolspire.Text Tools IPv6 ExpanderNewIPv6 Expander on Toolspire: Expand a compressed IPv6 address to eight groups of four hex digits. 2001:db8::1 becomes 2001:0db8:0000:0000:0000:0000:0000:0001.Internet & Network Tools Wildcard Mask CalculatorNewTurn an IPv4 prefix length into a subnet mask and the Cisco-style wildcard, which is the mask with the bits flipped. /26 is mask 255.255.255.192.Internet & Network Tools ISBN ValidatorNewISBN Validator on Toolspire: Check an ISBN-13 check digit. 9780306406157 is valid. Weights alternate 1 and 3, and the last digit makes the total end in 0.Education Tools Luhn CheckerNewLuhn Checker on Toolspire: Run the Luhn check on a digit string. 79927398713 is valid. The algorithm doubles every second digit from the right and the total.Developer Tools GSTIN Checksum ValidatorNewGSTIN Checksum Validator on Toolspire. Check a 15-character GSTIN shape and its check character. 22AAAAA0000A1ZC passes this checksum. It is an example.Business Tools IFSC Format CheckerNewIFSC Format Checker on Toolspire: Check the shape of an Indian IFSC: four letters, a zero, then six letters or digits. SBIN0001234 fits.Business Tools Temperature ConverterNewTemperature Converter on Toolspire: Convert Celsius to Fahrenheit and kelvin. 0 °C is 32 °F and 273.15 K. 100 °C is 212 °F. The maths stays on your device.Converters Shoe Size ConverterNewShoe Size Converter on Toolspire. Convert a men’s UK shoe size using a fixed chart. UK 8 is US men 9, EU 42 and India 8. Sizes not on the chart are refused.Converters Cooking Volume ConverterNewCooking Volume Converter on Toolspire. Add US cooking volumes into millilitres. A cup is 240 ml, a tablespoon is 15 ml and a teaspoon is 5 ml.Converters Fuel Efficiency ConverterNewFuel Efficiency Converter on Toolspire: Convert kilometres per litre into litres per 100 km and US miles per gallon.Converters Add Days CalculatorNewAdd Days Calculator on Toolspire. Add a number of days to a calendar date in UTC. 31 January 2024 plus 1 day is 1 February 2024.Calculators Quarter CalculatorNewQuarter Calculator on Toolspire: Name the calendar quarter of a date. January through March are Q1. 15 January 2026 is Q1 2026. October is Q4.Calculators Indian Fiscal YearNewName the Indian financial year of a date. 15 January 2026 is FY 2025-26. 1 April 2026 is FY 2026-27. The maths stays on your device.Calculators Decimal Time ConverterNewTurn decimal hours into hours and minutes. 1.5 hours is 1 hour 30 minutes, which is 90 minutes. The maths stays on your device.Converters Body Surface AreaNewBody Surface Area on Toolspire. Estimate body surface area with the Mosteller formula, the square root of height times weight over 3600.Calculators Mean Arterial PressureNewEstimate mean arterial pressure as (systolic + 2 × diastolic) / 3. 120 and 80 give 93.33 mmHg. The maths stays on your device.Calculators Waist Hip RatioNewDivide waist circumference by hip circumference. A waist of 80 and a hip of 100 give a ratio of 0.8. The maths stays on your device.Calculators Appliance Energy CalculatorNewAppliance Energy Calculator on Toolspire: Turn watts and hours into kilowatt-hours, then price them. A 1000 W appliance for 2 hours uses 2 kWh.Calculators Cross Rate CalculatorNewCross Rate Calculator on Toolspire. Multiply two exchange quotes that share a middle currency. If 1 USD is 83 INR and 1 EUR is 1.1 USD, then 1 EUR is 91.3 INR.Calculators ESI CalculatorNewEstimate ESI on a monthly wage at or under ₹21,000: employee 0.75% and employer 3.25%. ₹20,000 is ₹150 and ₹650. Open ESI Calculator on Toolspire.Calculators