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

Fuel Economy Converter

11 units available

Decimals:

From

To

1.340059

1 mpg (UK) = 1.340059 km/gal

Formula:

km/gal = mpg (UK) × 1.3400586524

With your value: 1 mpg (UK) = 1.34005865 km/gal

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

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

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

Miles/Gallon (UK) (mpg (UK))	Kilometer/Gallon (US) (km/gal)
0.5	0.670029
1	1.340059
2	2.680117
5	6.700293
10	13.400587
15	20.10088
20	26.801173
25	33.501466
50	67.002933
100	134.005865
250	335.014663
500	670.029326
1000	1,340.058652

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

Kilometer/Gallon (US) (km/gal)	Miles/Gallon (UK) (mpg (UK))
0.5	0.373118
1	0.746236
2	1.492472
5	3.73118
10	7.46236
15	11.19354
20	14.92472
25	18.6559
50	37.3118
100	74.623599
250	186.558998
500	373.117997
1000	746.235994

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 (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

Kilometer/Gallon (US) (km/gal)

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 (UK) to Kilometer/Gallon (US)

To convert from Miles/Gallon (UK) (mpg (UK)) to Kilometer/Gallon (US) (km/gal), multiply the value by 1.3400586524.

Formula: km/gal = mpg (UK) × 1.3400586524

Reverse: mpg (UK) = km/gal × 0.7462359936

Step-by-Step Example

Start with your value in Miles/Gallon (UK). For example: 5 mpg (UK)
Multiply by the conversion factor: 5 x 1.3400586524
The result is: 6.700293 km/gal

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.

About Kilometer/Gallon (US)

The kilometer/gallon (us) (km/gal) is a unit of fuel economy. One kilometer/gallon (us) equals 0.264172052 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 Kilometer/Gallon (US) are in 1 Miles/Gallon (UK)?

There are exactly 1.3400586524 Kilometer/Gallon (US) in 1 Miles/Gallon (UK). This means the conversion factor from Miles/Gallon (UK) to Kilometer/Gallon (US) is 1.3400586524.

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

The formula to convert Miles/Gallon (UK) to Kilometer/Gallon (US) is: km/gal = mpg (UK) × 1.3400586524. For example, to convert 10 Miles/Gallon (UK) to Kilometer/Gallon (US), you would multiply 10 by 1.3400586524.

What is a Miles/Gallon (UK)?