Utilnaro
Category: Converters

Fuel Economy Converter

Convert l/100 km, MPG (US and UK) and km/l.

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Converting Fuel economy.

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You can type here too — it converts the other way.

1 l/100 km = 235.215 MPG (US)

The same value in other units

kilometres per litre
100 km/l
miles per imperial gallon
282.481 MPG (UK)
Settings

Digits kept in the answer. Automatic keeps six, which hides floating-point noise without losing anything real.

Convert a whole list

Paste one conversion per line, written the way you would say it: "5 km to mi". Handy for a column copied out of a spreadsheet.

Details

About this tool

Converts between fuel consumption and fuel economy: litres per 100 km, miles per gallon in both US and imperial gallons, and kilometres per litre. These run in opposite directions - more MPG is less l/100 km - so the conversion is a reciprocal, not a factor.

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Ready-made conversions

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Good to know

Questions people actually ask

Why can't I multiply l/100 km to get MPG?
Because they measure opposite things. l/100 km is consumption - smaller is better - and MPG is distance per fuel, where bigger is better. The conversion divides rather than multiplies: MPG (US) = 235.215 ÷ l/100 km.
Is US MPG the same as UK MPG?
No. The imperial gallon is 20 % larger, so the same car rated at 30 MPG in the US is about 36 MPG in the UK. Both are listed separately here.