Miles/Gallon (US) to Miles/Gallon (UK) Converter

Fuel Economy Converter

11 units available

Decimals:

From

To

1.20095

1 mpg = 1.20095 mpg (UK)

Formula:

mpg (UK) = mpg × 1.2009504194

With your value: 1 mpg = 1.20095042 mpg (UK)

Other Miles/Gallon (US) to Miles/Gallon (UK) conversions

2 mpg to mpg (UK)3 mpg to mpg (UK)4 mpg to mpg (UK)5 mpg to mpg (UK)6 mpg to mpg (UK)7 mpg to mpg (UK)8 mpg to mpg (UK)

Miles/Gallon (US) to Miles/Gallon (UK) Conversion Table

Miles/Gallon (US) (mpg)	Miles/Gallon (UK) (mpg (UK))
0.5	0.600475
1	1.20095
2	2.401901
5	6.004752
10	12.009504
15	18.014256
20	24.019008
25	30.02376
50	60.047521
100	120.095042
250	300.237605
500	600.47521
1000	1,200.950419

Miles/Gallon (UK) to Miles/Gallon (US) Conversion Table

Miles/Gallon (UK) (mpg (UK))	Miles/Gallon (US) (mpg)
0.5	0.416337
1	0.832674
2	1.665348
5	4.163369
10	8.326738
15	12.490108
20	16.653477
25	20.816846
50	41.633692
100	83.267384
250	208.168461
500	416.336921
1000	832.673842

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Miles/Gallon (US) (mpg)

Fuel Economy

Exact conversion

Composite of a defined volume and a defined length. US and imperial gallons differ, so mpg figures are not interchangeable between them.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Miles/Gallon (UK) (mpg (UK))

Fuel Economy

Exact conversion

Composite of a defined volume and a defined length. US and imperial gallons differ, so mpg figures are not interchangeable between them.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Miles/Gallon (US) to Miles/Gallon (UK)

To convert from Miles/Gallon (US) (mpg) to Miles/Gallon (UK) (mpg (UK)), multiply the value by 1.2009504194.

Formula: mpg (UK) = mpg × 1.2009504194

Reverse: mpg = mpg (UK) × 0.8326738422

Step-by-Step Example

Start with your value in Miles/Gallon (US). For example: 5 mpg
Multiply by the conversion factor: 5 x 1.2009504194
The result is: 6.004752 mpg (UK)

About Miles/Gallon (US)

Miles per gallon (mpg) is the standard measure of fuel economy in the United States.

Common uses: car window stickers, fuel costs, environmental metrics.

About Miles/Gallon (UK)

The miles/gallon (uk) (mpg (UK)) is a unit of fuel economy. One miles/gallon (uk) equals 0.354006044 kilometre per litres. UnitConvertLab converts it against every other fuel economy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: fuel economy calculations, engineering and science, education.

Frequently Asked Questions

How many Miles/Gallon (UK) are in 1 Miles/Gallon (US)?

There are exactly 1.2009504194 Miles/Gallon (UK) in 1 Miles/Gallon (US). This means the conversion factor from Miles/Gallon (US) to Miles/Gallon (UK) is 1.2009504194.

What is the formula to convert Miles/Gallon (US) to Miles/Gallon (UK)?

The formula to convert Miles/Gallon (US) to Miles/Gallon (UK) is: mpg (UK) = mpg × 1.2009504194. For example, to convert 10 Miles/Gallon (US) to Miles/Gallon (UK), you would multiply 10 by 1.2009504194.

What is a Miles/Gallon (US)?