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Convert miles per imperial gallon to miles per US gallon

Convert miles per imperial gallon (mpg UK) to miles per US gallon (mpg). 1 mpg UK = 0.832674 mpg, and 1 mpg = 1.20095 mpg UK.

30 mpg UK = 24.9802 mpg

UK MPG to MPG formula

mpg = mpg UK ÷ 1.200949926

Divide the number of miles per imperial gallon by 1.200949926.

Example: To convert 30 mpg UK to miles per US gallon: 30 ÷ 1.200949926 = 24.9802 mpg.

Quick answers

What is 30 mpg UK in miles per US gallon?
30 mpg UK = 24.9802 mpg
What is 40 mpg UK in miles per US gallon?
40 mpg UK = 33.307 mpg
What is 50 mpg UK in miles per US gallon?
50 mpg UK = 41.6337 mpg

UK MPG to MPG conversion table

MPG to UK MPG table
miles per imperial gallon (mpg UK)miles per US gallon (mpg)
20 mpg UK16.6535 mpg
25 mpg UK20.8169 mpg
30 mpg UK24.9802 mpg
35 mpg UK29.1436 mpg
40 mpg UK33.307 mpg
45 mpg UK37.4703 mpg
50 mpg UK41.6337 mpg
55 mpg UK45.7971 mpg
60 mpg UK49.9605 mpg
65 mpg UK54.1238 mpg
70 mpg UK58.2872 mpg

Frequently asked questions

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

Divide the number of miles per imperial gallon by 1.200949926. To convert 30 mpg UK to miles per US gallon: 30 ÷ 1.200949926 = 24.9802 mpg.

Is the UK MPG to MPG conversion exact?

Yes. Both units are defined exactly, so 1 mile per imperial gallon is exactly 0.832674184629 miles per US gallon. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

Why are US and UK mpg different?

A US gallon is 3.785 L and an imperial gallon is 4.546 L. Because the UK gallon is about 20% larger, the same car gets about 20% more miles per gallon in UK figures.

What is 30 mpg UK in miles per US gallon?

30 mpg UK = 24.9802 mpg.

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

Use the reverse relationship: 1 mpg = 1.20095 mpg UK. The MPG to UK MPG page has a converter and a full table.

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