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Fuel Efficiency Converter
What is Fuel Efficiency Converter?
A fuel efficiency converter changes between L/100 km, km per litre, miles per gallon (US) and miles per gallon (UK). It helps compare vehicles listed in different units.
How Fuel Efficiency Converter helps
- Compare cars across countries
- Avoids conversion mistakes
- Shows all units at once
How to use Fuel Efficiency Converter
- Paste or enter your input.
- Choose the options you need.
- Copy the result.
Example
8 L/100 km equals about 12.5 km/L and 29.4 US mpg.
Frequently asked questions
Why do US and UK mpg differ?
A UK gallon is larger than a US gallon.
Is lower L/100 km better?
Yes. It means less fuel per distance.
Are results rounded?
Yes, to two decimals.
Results depend entirely on the prices and factors you enter. Real-world costs, emissions and savings vary.
Last updated October 7, 2026.