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Temperature Converter

Temperature Converter is part of Toolspire and is ready as soon as this page loads. You type Celsius. Fahrenheit is C × 9/5 + 32. Kelvin is C + 273.15. The unit converter has many units. This page is only temperature.

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What you can do here

Both targets

Fahrenheit is the headline. Kelvin is in the detail.

The two famous points

Freezing and boiling of water at standard pressure.

Celsius in

To start from Fahrenheit, subtract 32 and multiply by 5/9 yourself, then type the Celsius.

The sequence

How to use the Temperature Converter

  1. 1

    Type 0

    You should see 32 °F and 273.15 K.

  2. 2

    Type 100

    You should see 212 °F.

  3. 3

    Do not type a unit letter

    The box is a number of degrees Celsius.

Worth knowing

  • Temperature Converter on Toolspire: 0 °C is 32 °F and 273.15 K.
  • 100 °C is 212 °F and 373.15 K.
  • Fahrenheit = C × 9/5 + 32. Kelvin = C + 273.15.
  • Absolute zero is −273.15 °C. Colder than that is rejected.

Water’s two checkpoints

The Celsius scale puts water’s freezing point at 0 and its boiling point at 100, at standard pressure. Fahrenheit puts those at 32 and 212. The gap of 180 Fahrenheit degrees over 100 Celsius degrees is the 9/5 in the formula. Kelvin shifts Celsius by 273.15 so that 0 K is absolute zero. This page starts from Celsius and prints both.

FAQ

Questions about Temperature Converter

Where does Temperature Converter run?

Temperature Converter runs in this tab on Toolspire. What you type or drop in is not sent to us and is not stored on a server.

What is 0 °C in Fahrenheit and kelvin?

32 °F and 273.15 K.

What is 100 °C in Fahrenheit?

212 °F.

Can I enter Fahrenheit directly?

Not in the box. Convert it to Celsius first, or rearrange C = (F − 32) × 5/9.

Why reject below −273.15?

That would be colder than 0 K, which this scale does not use.

Keep going

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