Fuel Consumption Converter — Fuel economy is reported in different units in different countries. The US uses miles per gallon (MPG), the EU and most of the world use liters per 100 km (L/100km), and parts of Asia use km per liter (km/L). The US gallon and the UK (imperial) gallon are different, hence the "MPG (US)" and "MPG (UK)" distinction.
Conversions run locally in your browser. No values are sent anywhere.
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What is fuel consumption converter?
Fuel economy is reported in different units in different countries. The US uses miles per gallon (MPG), the EU and most of the world use liters per 100 km (L/100km), and parts of Asia use km per liter (km/L). The US gallon and the UK (imperial) gallon are different, hence the "MPG (US)" and "MPG (UK)" distinction.
This converter handles all four. L/100km is the inverse of the others, so the math is non-linear — but the result is correct either way.
How to use it
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Enter a value
Type the consumption in any supported unit. The default is 1 L/100km.
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Pick the units
The from/to dropdowns cover all four common units.
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Mind the direction
L/100km is "lower is better"; MPG and km/L are "higher is better". A 5 L/100km car is more efficient than a 10 L/100km car; a 50 mpg car is more efficient than a 25 mpg car.
Examples
US 30 mpg → L/100km
A US-spec 30 mpg rating converts to about 7.84 L/100km.
30 mpg (US)
Result: ≈ 7.84 L/100km
Frequently asked questions
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Last reviewed: 2026-08-21