Fuel Economy Converter

Convert fuel consumption between liters per 100 km, kilometers per liter, US mpg and UK mpg.

L/100 km = 100 ÷ km/L

Fuel Economy units and how they relate

L/100 km is a consumption figure (lower is better) while km/L and mpg are economy figures (higher is better), so the conversion is an inverse, not a simple multiplication. US and UK mpg differ because the gallons differ.

UnitSymbolEquals in kilometers per liter
1 kilometer per literkm/L1 km/L
1 liter per 100 kmL/100 km100 km/L
1 US mile per gallonmpg (US)0.4251437074 km/L
1 UK mile per gallonmpg (UK)0.3540061899 km/L

Popular fuel economy conversions

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Frequently asked questions

How accurate is this fuel economy converter?

It uses the exact defined conversion factors for each unit and shows results to 10 significant digits. L/100 km is a consumption figure (lower is better) while km/L and mpg are economy figures (higher is better), so the conversion is an inverse, not a simple multiplication. US and UK mpg differ because the gallons differ.

How do I convert kilometers per liter to liters per 100 km?

Enter the value, choose kilometers per liter in the "From" list and liters per 100 km in the "To" list. For example, 1 kilometer per liter equals 100 L/100 km.

Is the converter free?

Yes. It is free, needs no sign-up and runs entirely in your browser, so it also works offline once the page has loaded.

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