Fuel calculator
Kilometres and Litres to MPG Calculator
Enter kilometres driven and litres used to calculate the equivalent UK / imperial MPG.
Use this calculator
Enter the distance driven and litres used to calculate UK MPG.
What your result means
This converts the distance and fuel used into UK / imperial MPG. The calculation first turns litres into UK gallons, so it must not be compared directly with US MPG.
Worked example
Using 480 kilometres and 30 litres:
- Kilometres driven
- 480 km
- UK gallons used
- 6.6
The result is 45.2 UK MPG.
Formula
Common distance and fuel examples
| Kilometres driven | Litres used | UK MPG |
|---|---|---|
| 480 km | 20 litres | 67.8 |
| 480 km | 30 litres | 45.2 |
| 480 km | 40 litres | 33.9 |
| 480 km | 50 litres | 27.12 |
Helpful questions
Does this calculate UK or US MPG?
It calculates UK / imperial MPG using the 4.54609-litre UK gallon. Convert US MPG to UK MPG if required.
Why convert kilometres to miles?
MPG is expressed in miles per gallon, so kilometre distances are converted using 1 mile = 1.609344 km before calculating MPG.
Related calculators
- Miles and Litres to MPG Calculator
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- MPG Calculator
Calculate your real-world UK fuel economy.
- MPG to km/L Converter
Convert UK MPG and kilometres per litre.