Fuel calculator
US MPG to UK MPG Converter
Convert US and UK MPG accurately.
Use this calculator
Enter a value to convert US MPG to UK MPG.
Method: Uses the exact UK and US gallon volumes.
What your result means
UK and US MPG use different gallon volumes, so the conversion changes the unit label rather than the vehicle’s real fuel consumption.
Worked example
Using 40 US MPG:
- Converted UK MPG
- 48.04 UK MPG
The converter uses the same exact unit conversion in both directions.
Formula
US MPG to UK MPG reference
| US MPG | UK MPG |
|---|---|
| 20 | 24.02 UK MPG |
| 30 | 36.03 UK MPG |
| 40 | 48.04 UK MPG |
| 50 | 60.05 UK MPG |
| 60 | 72.06 UK MPG |
Helpful questions
What does UK MPG mean?
UK MPG is higher for the same efficiency because a UK gallon is larger than a US gallon.
Does this use UK or US gallons?
This converter explicitly converts between US and UK MPG using their different gallon volumes.Convert US MPG to UK MPG when needed.
Can I convert UK MPG back?
Yes. Select Reverse direction in the converter to use the inverse conversion.
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