⛽ Fuel Economy converter
Convert fuel economy between mpg (US and UK), L/100 km and km/L. Enter a value and pick its unit to see it in every other unit.
Popular fuel economy conversions
| Conversion | Rate |
|---|---|
| Miles Per Gallon (US) to liters per 100 km | L/100 km = 235.2146 ÷ mpg |
| Liters Per 100 Km to miles per gallon (US) | mpg = 235.2146 ÷ L/100 km |
| Miles Per Gallon (UK) to liters per 100 km | L/100 km = 282.4809 ÷ mpg (UK) |
| Liters Per 100 Km to miles per gallon (UK) | mpg (UK) = 282.4809 ÷ L/100 km |
| Miles Per Gallon (US) to kilometers per liter | 1 mpg = 0.42514371 km/L |
| Kilometers Per Liter to miles per gallon (US) | 1 km/L = 2.3521458 mpg |
| Miles Per Gallon (US) to miles per gallon (UK) | 1 mpg = 1.2009499 mpg (UK) |
About fuel economy units
Miles per gallon and kilometers per liter measure distance per fuel, so higher is better. Liters per 100 km measures fuel per distance, so lower is better. Because they run in opposite directions, converting between them means dividing, not multiplying.
To get L/100 km from US mpg, divide 235.215 by the mpg figure. A 30 mpg car uses about 7.84 L/100 km.
Fuel Economy units
| Unit | Symbol | In kilometers per liter |
|---|---|---|
| Mile Per Gallon (US) | mpg | 0.4251437074 km/L |
| Mile Per Gallon (UK) | mpg (UK) | 0.3540061899 km/L |
| Kilometer Per Liter | km/L | 1 km/L |
| Liter Per 100 Km | L/100 km | — |
All fuel economy conversions
From miles per gallon (US)
From miles per gallon (UK)
From kilometers per liter
From liters per 100 km
Fuel Economy unit definitions
- Mile Per Gallon (US) (mpg)
- Miles per US gallon is how fuel economy is rated in the United States. Higher is better.
- Mile Per Gallon (UK) (mpg (UK))
- Miles per imperial gallon is used in the UK. The imperial gallon is larger, so the same car scores about 20% more mpg in the UK than in the US.
- Kilometer Per Liter (km/L)
- Kilometers per liter is used in Japan, India and Latin America. Higher is better.
- Liter Per 100 Km (L/100 km)
- Liters per 100 kilometers is how fuel use is given in Europe, Canada and Australia. It runs the other way: lower is better.