How to convert miles per gallon to miles per gallon (UK)
mpg (UK) = mpg × 1.200949926Multiply the value in miles per gallon by 1.200949926. To go the other way, multiply by 0.8326741846 (or divide by 1.200949926).
A mile per US gallon is larger than a mile per imperial gallon: one mile per US gallon contains 1.200949926 miles per gallon (UK).
Worked examples
- 1 mile per US gallon1 mpg × 1.200949926 = 1.200949926 mpg (UK)
- 5 miles per gallon (US)5 mpg × 1.200949926 = 6.004749628 mpg (UK)
- 10 miles per gallon (US)10 mpg × 1.200949926 = 12.00949926 mpg (UK)
- 20 miles per gallon (US)20 mpg × 1.200949926 = 24.01899851 mpg (UK)
- 100 miles per gallon (US)100 mpg × 1.200949926 = 120.0949926 mpg (UK)
Miles per gallon (US) to miles per gallon (UK) conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Miles per gallon (mpg) | Miles per gallon (mpg (UK)) |
|---|---|
| 10 mpg | 12.009499 mpg (UK) |
| 12 mpg | 14.411399 mpg (UK) |
| 15 mpg | 18.014249 mpg (UK) |
| 18 mpg | 21.617099 mpg (UK) |
| 20 mpg | 24.018999 mpg (UK) |
| 22 mpg | 26.420898 mpg (UK) |
| 25 mpg | 30.023748 mpg (UK) |
| 28 mpg | 33.626598 mpg (UK) |
| 30 mpg | 36.028498 mpg (UK) |
| Miles per gallon (mpg) | Miles per gallon (mpg (UK)) |
|---|---|
| 32 mpg | 38.430398 mpg (UK) |
| 35 mpg | 42.033247 mpg (UK) |
| 40 mpg | 48.037997 mpg (UK) |
| 45 mpg | 54.042747 mpg (UK) |
| 50 mpg | 60.047496 mpg (UK) |
| 55 mpg | 66.052246 mpg (UK) |
| 60 mpg | 72.056996 mpg (UK) |
| 70 mpg | 84.066495 mpg (UK) |
| 100 mpg | 120.09499 mpg (UK) |
About the units
Mile per US gallon (mpg)
Miles travelled per US gallon — higher is better. The standard in the United States. One mile per US gallon equals 0.4251437074 kilometers per liter (km/L).
Mile per imperial gallon (mpg (UK))
Miles per imperial gallon. The same car shows about 20% higher mpg in UK units than in US units. One mile per imperial gallon equals 0.3540061899 kilometers per liter (km/L).
Frequently asked questions
How many miles per gallon (UK) are in one mile per US gallon?
There are 1.200949926 miles per gallon (UK) in one mile per US gallon, and this value is exact by definition.
How do I convert miles per gallon to miles per gallon (UK)?
Multiply the number of miles per gallon by 1.200949926. For example, 10 mpg × 1.200949926 = 12.00949926 mpg (UK).
How many miles per gallon are in one mile per imperial gallon?
One mile per imperial gallon equals 0.8326741846 miles per gallon. That is the reverse factor, 1 ÷ 1.200949926.
What is 10 miles per gallon (US) in miles per gallon (UK)?
10 mpg = 12.00949926 mpg (UK).
Is this mpg to mpg (UK) converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.