Miles per US Gallon to Miles per Imperial Gallon

1 mpg = 1.20095 mpg (UK)

From

How to convert miles per US gallon to miles per imperial gallon

mpg (UK) = mpg × 1.20095

Example: 30 mpg = 36.0285 mpg (UK)

Miles per US Gallon to Miles per Imperial Gallon conversion table

Miles per US Gallon (mpg)	Miles per Imperial Gallon (mpg (UK))
5 mpg	6.00475 mpg (UK)
6 mpg	7.2057 mpg (UK)
7 mpg	8.406649 mpg (UK)
8 mpg	9.607599 mpg (UK)
9 mpg	10.80855 mpg (UK)
10 mpg	12.0095 mpg (UK)
12 mpg	14.4114 mpg (UK)
15 mpg	18.01425 mpg (UK)
18 mpg	21.6171 mpg (UK)
20 mpg	24.019 mpg (UK)
25 mpg	30.02375 mpg (UK)
30 mpg	36.0285 mpg (UK)
35 mpg	42.03325 mpg (UK)
40 mpg	48.038 mpg (UK)
45 mpg	54.04275 mpg (UK)
50 mpg	60.0475 mpg (UK)
60 mpg	72.057 mpg (UK)

About the units

Miles per US Gallon: Miles per US gallon (mpg) measures fuel economy in the United States: the higher the number, the more efficient the vehicle.

Miles per Imperial Gallon: Miles per imperial gallon is the fuel economy unit used in the United Kingdom. An imperial gallon is about 20% larger than a US gallon.

Frequently asked questions

How many miles per imperial gallon are in 1 mile per US gallon?

1 mile per US gallon equals 1.20095 miles per imperial gallon.

How many miles per US gallon are in 1 mile per imperial gallon?

1 mile per imperial gallon equals 0.8326742 miles per US gallon.

How do I convert miles per US gallon to miles per imperial gallon?

Use the formula mpg (UK) = mpg × 1.20095.

What is 10 miles per US gallon in miles per imperial gallon?

10 miles per US gallon equals 12.0095 miles per imperial gallon.

Related conversions

Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated October 17, 2026