MPG to L/100km Converter
Convert fuel economy from miles per gallon into liters per 100 kilometers and kilometers per liter. Enter the mpg you know and both metric figures appear.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Liters per 100 kilometers is 235.2 divided by the miles per gallon. A lower number means less fuel for the same distance, which is the reverse of mpg.
Kilometers per liter is the miles per gallon times about 0.425. Both figures describe the same car, so they always move together.
Worked example
A car rated at 30 miles per gallon is the same as 7.8 liters per 100 kilometers, or 12.8 kilometers on each liter.
Questions
Why is a lower L/100km better?
It measures how much fuel the car burns to go 100 kilometers. Less fuel means a more efficient car, the opposite of mpg.
Is mpg the same in the US and the UK?
No. The UK gallon is larger, so a UK mpg figure is higher than the same car's US figure. Check which gallon a number uses.
How do I go back to mpg?
Divide 235 by the L/100km figure. For example, 8 liters per 100 kilometers is about 29 mpg.
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