Miles per imperial gallon to Miles per US gallon

Convert Miles per imperial gallon to Miles per US gallon instantly. Free online fuel economy unit converter with exact formula, conversion table and FAQ.

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Formula

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Formula

1 mpg imp = 0.8326741846 mpg

mpg = mpg imp × 0.8326741846

mpg imp = mpg ÷ 0.8326741846

Conversion table

1 mpg imp0.832674 mpg
2 mpg imp1.665348 mpg
5 mpg imp4.163371 mpg
10 mpg imp8.326742 mpg
20 mpg imp16.653484 mpg
50 mpg imp41.633709 mpg
100 mpg imp83.267418 mpg
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Frequently asked questions

How many miles per us gallon are in one miles per imperial gallon?

One mpg imp equals 0.8326741846 miles per us gallon.

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

Multiply the number of miles per imperial gallon by 0.8326741846 to get miles per us gallon. To go the other way, multiply miles per us gallon by 1.200949926 (or divide by 0.8326741846) to get miles per imperial gallon.

Is this conversion exact?

Yes. This conversion uses the exact defined relationship between miles per imperial gallon and miles per us gallon, so the result shown is mathematically precise (rounded only for display).

When is miles per imperial gallon to miles per us gallon conversion commonly used?

It is commonly used in automotive fuel efficiency ratings, vehicle comparisons and shopping, as well as EPA, WLTP and other international fuel economy standards.

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About this conversion

Miles per imperial gallon and Miles per US gallon are both units used to measure fuel economy. Miles per imperial gallon (mpg imp) measures how many miles a vehicle travels using one imperial (UK) gallon of fuel; a higher number means better efficiency. It is used mainly in the United Kingdom and other Commonwealth countries. Miles per US gallon (mpg) measures how many miles a vehicle travels using one US gallon of fuel; a higher number means better efficiency. It is the standard fuel economy unit used in the United States. This converter uses the precise relationship 1 mpg imp = 0.8326741846 mpg (equivalently 1 mpg = 1.200949926 mpg imp), so results stay accurate for automotive fuel efficiency ratings, vehicle comparisons and shopping, as well as EPA, WLTP and other international fuel economy standards.