Fuel Economy Converter
Fuel economy describes how far a vehicle travels on a given amount of fuel. Distance-per-fuel measures like miles per gallon and kilometers per liter go up as efficiency improves, while fuel-per-distance measures like liters per 100 km go down. Because of that, L/100 km is the reciprocal of the others. US and Imperial gallons differ, so US and UK MPG are separate.
About fuel economy conversion
Fuel Economy conversion is commonly needed when comparing vehicle efficiency across countries. Distance-per-fuel and fuel-per-distance measures move in opposite directions, so a higher MPG matches a lower L/100 km.
Popular conversions
All fuel economy units
| Unit | Symbol | System |
|---|---|---|
| Kilometer per Liter | km/L | Metric |
| Mile per Gallon (US) | mpg (US) | US |
| Mile per Gallon (UK) | mpg (UK) | Imperial |
| Liter per 100 km | L/100km | Metric |
Frequently asked questions
What is the base unit for fuel economy?
Fuel Economy conversions on this site are calculated against the kilometer per liter (km/L).
Which fuel economy units can I convert?
You can convert between 4 units, including kilometer per liter, mile per gallon (us), mile per gallon (uk), liter per 100 km, and more.
Where is fuel economy conversion useful?
It is commonly needed when comparing vehicle efficiency across countries.
Does this converter mix measurement systems?
The converter supports Metric, US, Imperial units and keeps their exact definitions separate so results stay accurate.