Fuel Economy Converter
Convert fuel consumption and efficiency between miles per gallon (US and UK), liters per 100 km, and kilometers per liter. Essential for comparing cars from different countries.
Common Fuel Economy Conversions
| From | To |
|---|---|
| 50 mpg (US) | 4.71 L/100km |
| 40 mpg (US) | 5.88 L/100km |
| 30 mpg (US) | 7.84 L/100km |
| 20 mpg (US) | 11.76 L/100km |
| 10 mpg (US) | 23.52 L/100km |
| 5 L/100km | 47.04 mpg (US) |
| 6 L/100km | 39.2 mpg (US) |
| 8 L/100km | 29.4 mpg (US) |
Fuel Economy Unit Definitions
- MPG (US)
- Miles per US gallon. Standard in the USA.
- MPG (UK)
- Miles per imperial gallon. UK mpg is ~20% higher than US mpg for the same car.
- L/100km
- Liters per 100 km. Used in Europe, Australia, and most of the world.
- km/L
- Kilometers per liter. Used in some Asian countries.
Frequently Asked Questions
How do I convert MPG to L/100km?
Divide 235.214 by mpg (US). Example: 30 mpg → 235.214 ÷ 30 = 7.84 L/100km.
What is a good fuel economy?
A fuel-efficient car typically gets 40+ mpg (US) or under 6 L/100km. Average cars get 25–30 mpg (US) or 8–10 L/100km.