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Convert Miles per Gallon (US) to Miles per Gallon (UK)

mpg to mpg · fuel economy conversion

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What are miles per gallon (us) and miles per gallon (uk)?

Miles per gallon (US) is the standard US fuel-economy measure, based on the 3.785-liter US gallon. Miles per gallon (UK) uses the larger 4.546-liter imperial gallon, so its numbers run higher than US mpg. For reference: 30 US mpg is about 12.8 km/L, a typical efficient car.

How to convert miles per gallon (us) to miles per gallon (uk)

1 mpg = 1.20095 mpg. To convert, multiply the number of miles per gallon (us) by 1.20095. For example, 5 mpg = 6.00476 mpg, and 20 mpg = 24.019 mpg. To go the other way, multiply miles per gallon (uk) by 0.832673 (since 1 mpg = 0.832673 mpg).

Miles per Gallon (US) to Miles per Gallon (UK) conversion table

Miles per Gallon (US) (mpg)Miles per Gallon (UK) (mpg)
20 24.019
25 30.0238
30 36.0285
35 42.0333
40 48.0381
50 60.0476
60 72.0571

FAQ

What is 1 mpg in mpg?

1 mpg = 1.20095 mpg. To convert any amount, multiply the number of miles per gallon (us) by 1.20095.

How do I convert miles per gallon (uk) back to miles per gallon (us)?

Go the other way: 1 mpg = 0.832673 mpg, so multiply miles per gallon (uk) by 0.832673 to get miles per gallon (us).

Is a miles per gallon (us) bigger than a miles per gallon (uk)?

Yes — 1 mpg is the larger unit, equal to 1.20095 mpg.

Are these fuel economy conversions exact?

They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.

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