Fuel Economy Converter
Convert fuel economy between MPG (US and UK), L/100km, and km/L. Useful for comparing car specs across countries or understanding international fuel consumption ratings.
L/100 km
7.84049
km/L
12.7543
MPG (US)
30
MPG (Imperial)
36.0285
How to use the fuel economy converter
Pick MPG, km/L, or L/100km, enter a value, and the rest convert simultaneously.
Formula & explanation
L/100km = 100 / (km/L) = 235.21 / MPG (US) = 282.48 / MPG (UK). Lower L/100km is better — it's how much fuel you burn per fixed distance.
Examples
30 MPG (US) ≈ 7.84 L/100km ≈ 12.75 km/L. 5 L/100km ≈ 47 MPG (US).
Frequently asked questions
- Why MPG and L/100km are not linearly related?
- Fuel-per-distance and distance-per-fuel are reciprocals. Doubling MPG doesn't halve L/100km perfectly past zero.
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