Convert mpg (UK) to mpg
Miles per imperial gallon to miles per US gallon. Enter a value to convert, or use the mpg (UK) to mpg chart further down the page.
1 mile per imperial gallon equals 0.8326741846 miles per US gallon. Going the other way, 1 mile per US gallon = 1.200949926 miles per imperial gallon.
Note. L/100km is an inverse measure — a lower number means better economy — so converting to or from it uses a reciprocal, not a multiplication.
How to convert mpg (UK) to mpg
To convert miles per imperial gallon to miles per US gallon, multiply the mile per imperial gallon value by 0.8326741846. You can also divide by 1.200949926 to get the same answer.
MPG (US) = MPG (UK) × 0.8326741846
Worked example
Convert 30 MPG (UK) to miles per US gallon:
30 MPG (UK) = 24.98022554 MPG (US)
mpg (UK) to mpg conversion chart
Use this mpg (UK) to mpg table for quick reference without typing anything.
| miles per imperial gallon (MPG (UK)) | miles per US gallon (MPG (US)) |
|---|---|
| 5 MPG (UK) | 4.163370923 MPG (US) |
| 10 MPG (UK) | 8.326741846 MPG (US) |
| 15 MPG (UK) | 12.49011277 MPG (US) |
| 20 MPG (UK) | 16.65348369 MPG (US) |
| 25 MPG (UK) | 20.81685462 MPG (US) |
| 30 MPG (UK) | 24.98022554 MPG (US) |
| 35 MPG (UK) | 29.14359646 MPG (US) |
| 40 MPG (UK) | 33.30696739 MPG (US) |
| 50 MPG (UK) | 41.63370923 MPG (US) |
| 60 MPG (UK) | 49.96045108 MPG (US) |
What is a mile per imperial gallon?
Miles per imperial gallon is the figure quoted in the UK. The imperial gallon is 4.54609 litres, about 20% larger than the US gallon.
What is a mile per US gallon?
Miles per US gallon is the fuel economy figure used on American window stickers. A US gallon is smaller than an imperial gallon, so US MPG figures are about 17% lower than UK MPG for the same car.
Frequently asked questions
How many mpg are in a mile per imperial gallon?
1 mpg (UK) equals 0.8326741846 mpg. Going the other way, 1 mpg is 1.200949926 mpg (UK).
How do you convert mpg (UK) to mpg?
To convert miles per imperial gallon to miles per US gallon, multiply the mile per imperial gallon value by 0.8326741846. You can also divide by 1.200949926 to get the same answer.
What is 10 mpg (UK) in mpg?
10 mpg (UK) equals 8.326741846 mpg. The conversion chart on this page lists the other values people look up most often.
Related fuel economy conversions
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