Fuel Economy Converter
Convert MPG, L/100km, and more
Convert fuel-economy figures between miles per gallon (MPG), liters per 100 kilometers, and kilometers per liter — useful when comparing cars from different regions.
MPG (US)
30.00
MPG (UK)
36.03
L/100km
7.84
km/L
12.75
How to Use This Calculator
- Enter your fuel-economy figure.
- Choose the unit you're converting from.
- Choose the unit you're converting to.
- Read the converted figure.
Why Use This Calculator?
- Comparing a U.S. MPG rating with a European L/100km figure.
- Understanding a rental car's fuel economy abroad.
- Checking whether a car is efficient.
Real-World Examples
30 MPG
30 miles per gallon equals about 7.84 liters per 100 kilometers.
6 L/100km
6 liters per 100 kilometers equals about 39.2 miles per gallon.
Frequently Asked Questions
Why are MPG and L/100km inverted?
MPG is distance per unit of fuel (higher is better), while L/100km is fuel per distance (lower is better). They describe efficiency from opposite directions.
Is a U.S. gallon the same as a UK gallon?
No. A U.S. gallon is about 3.785 liters, while an imperial (UK) gallon is about 4.546 liters. Make sure you're using the right one.
Does this reflect real driving?
No — it converts the figure you enter. Real-world economy varies with conditions and driving style.
Important Disclaimer
Uses standard conversion factors between fuel-economy units. Actual driving economy varies.
Privacy
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