Unit converters
Works in your browser. Nothing is uploaded.Fuel economy converter
Miles per gallon to litres per 100 km and kilometres per litre, with US and UK gallons.
mpg (US)
Litres per 100 km
–
Litres per 100 km go down as miles per gallon go up. US and UK gallons give different mpg.
- Litres per 100 km–
- Kilometres per litre–
- Miles per gallon (US)–
- Miles per gallon (UK)–
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How to use it
- Type the value
The number you have, like 30 for 30 mpg.
- Pick its unit
L/100 km, km/L, or mpg with US or UK gallons.
- Read or copy
Every other unit follows. Tap copy beside the one you need.
Tips
- Lower is better
Litres per 100 km fall as a car gets thriftier, while mpg rises.
- US or UK mpg
UK gallons are bigger, so the same car shows more mpg in the UK.
- Not a straight line
mpg and L/100 km are reciprocals: halving the fuel used doubles the mpg.
In the app
Unit converter in Angle Meter
- Every unit of a kind on one screen
- Typed conversions like 5′ 7 3/8″ to mm
- Pinned unit pairs and a conversion list
- Voice commands
Get it onGoogle PlayComing soon to the App Store
Unit converter guide ›