Fuel Economy Converter
Convert fuel economy between MPG, US MPG, UK MPG, kilometres per litre and litres per 100 kilometres.
Set your values
Adjust the values, then calculate your result.
How to use Fuel Economy Converter
- Enter the measurements or amounts in the fields above.
- Check that dimensions, rates and units match the labels.
- Select “Convert fuel economy” to see a clear estimate and the formula used.
How the fuel economy converter works
All values convert through litres per 100 kilometres; US and UK gallons use different exact litre volumes.
Check your measurements and assumptions
Vehicle dashboard readings are estimates and real-world economy changes with driving, weather, load and maintenance. US MPG and UK MPG are not interchangeable.
Review the estimate before you act
Compare this result with an independent measurement, supplier quote or institution guidance when the decision matters. Confirm that the units and assumptions match the labels above, and update the inputs when the conditions change. Keep a note of the values used so you can reproduce the estimate later. This calculator is a planning aid and does not replace professional, product-specific or local guidance.
How do I convert US MPG to L/100 km?
Divide 235.215 by US miles per gallon.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.