4 UNITS
← All convertersFuel economy converter
Convert fuel economy between km/L, L/100 km and US or UK miles per gallon. Distance per fuel and fuel per distance are inverses, so these conversions are not simple multiplications.
Fuel economy units and their values
| Unit | Symbol | Value |
|---|---|---|
| kilometres per litre | km/L | Base unit |
| litres per 100 km | L/100 km | km/L = 100 ÷ L/100 km |
| miles per US gallon | mpg (US) | 1 mpg (US) = 0.4251437074 km/L |
| miles per UK gallon | mpg (UK) | 1 mpg (UK) = 0.3540061899 km/L |
Factors come from each unit’s definition and are applied without rounding; the converter shows 7 significant figures.