Fuel Economy Converter
Use this free fuel economy converter to work out fuel economy in km per litre, litres per 100 km, and US and UK miles per gallon. Enter your numbers and the results update as you type. It runs in your browser, so nothing you enter is uploaded, and there is nothing to sign up for.
Runs in your browser. Your files never leave your device.
How it works
- 01Enter your numbers in the fields.
- 02The results update as you type.
- 03Change a value to compare what-if cases.
Questions
How do I convert mpg to L/100km?
Divide 235.215 by the miles per US gallon to get litres per 100 km. This converter does it for you and also shows km per litre and UK mpg.
Is my data saved or sent anywhere?
No. The calculation runs in your browser and nothing is uploaded.
Are the results exact?
The maths is exact for the values you enter, but real life can differ. Use the result as a guide.
Is my file uploaded to a server?
No. Everything happens inside your browser on your own device. Your files are never sent to us or anyone else.
Is it free?
Yes. It is free to use, with no signup, no watermark and no daily limit.