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Fuel Efficiency Converter

Fuel Efficiency Converter is part of Toolspire and is ready as soon as this page loads. Lower L/100 km is better. Higher km/L is better. They run in opposite directions, which is why both are printed. US mpg uses 1.609344 km per mile and 3.785411784 litres per gallon.

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What you can do here

Both directions of “better”

The headline is L/100 km, where smaller is thriftier. The detail keeps km/L and mpg.

US gallon, named

An imperial gallon is larger and would give a different mpg.

15 is the check

100/15 and 15 × 2.35215.

The sequence

How to use the Fuel Efficiency Converter

  1. 1

    Type km per litre

    15 is the sample.

  2. 2

    Read 6.6667 L/100 km

    That is the reciprocal form.

  3. 3

    Do not compare with imperial mpg

    The detail’s mpg is the US gallon.

Worth knowing

  • Fuel Efficiency Converter on Toolspire: 15 km/L is 100 ÷ 15 = 6.6667 L/100 km.
  • The same 15 km/L is about 35.282 US mpg.
  • US mpg multiplies km/L by 2.35215, from the mile and the US gallon.
  • A figure of 0 km/L is rejected. The reciprocal would be infinite.

The reciprocal flips the ranking

Kilometres per litre and litres per 100 kilometres describe the same car in opposite directions. 15 km/L uses 100/15 = 6.6667 litres to travel 100 km. US miles per gallon converts that distance and that volume: a mile is 1.609344 km and a US gallon is 3.785411784 litres, and the combined factor is about 2.35215. Fifteen times that is about 35.282 mpg. An imperial gallon is not this factor.

FAQ

Questions about Fuel Efficiency Converter

Where does Fuel Efficiency Converter run?

Fuel Efficiency 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 15 km/L in L/100 km?

6.6667.

What is 15 km/L in US mpg?

About 35.282.

Is a higher L/100 km better?

No. It means more fuel for the same 100 km. Higher km/L is the thriftier direction.

Is this imperial mpg?

No. It is the US gallon.

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