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

Fuel Economy Converter

11 units available

Decimals:

From

To

1.609344

1 mpg = 1.609344 km/gal

Formula:

km/gal = mpg × 1.6093440006

With your value: 1 mpg = 1.609344 km/gal

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

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

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

Miles/Gallon (US) (mpg)	Kilometer/Gallon (US) (km/gal)
0.5	0.804672
1	1.609344
2	3.218688
5	8.04672
10	16.09344
15	24.14016
20	32.18688
25	40.2336
50	80.4672
100	160.9344
250	402.336
500	804.672
1000	1,609.344001

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

Kilometer/Gallon (US) (km/gal)	Miles/Gallon (US) (mpg)
0.5	0.310686
1	0.621371
2	1.242742
5	3.106856
10	6.213712
15	9.320568
20	12.427424
25	15.53428
50	31.06856
100	62.137119
250	155.342798
500	310.685596
1000	621.371192

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

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 (US) to Kilometer/Gallon (US)

To convert from Miles/Gallon (US) (mpg) to Kilometer/Gallon (US) (km/gal), multiply the value by 1.6093440006.

Formula: km/gal = mpg × 1.6093440006

Reverse: mpg = km/gal × 0.621371192

Step-by-Step Example

Start with your value in Miles/Gallon (US). For example: 5 mpg
Multiply by the conversion factor: 5 x 1.6093440006
The result is: 8.04672 km/gal

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 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 (US)?

There are exactly 1.6093440006 Kilometer/Gallon (US) in 1 Miles/Gallon (US). This means the conversion factor from Miles/Gallon (US) to Kilometer/Gallon (US) is 1.6093440006.

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

The formula to convert Miles/Gallon (US) to Kilometer/Gallon (US) is: km/gal = mpg × 1.6093440006. For example, to convert 10 Miles/Gallon (US) to Kilometer/Gallon (US), you would multiply 10 by 1.6093440006.

What is a Miles/Gallon (US)?