Miles/Gallon (US) to Kilometer/Liter Converter
Convert Miles/Gallon (US) (mpg) to Kilometer/Liter (km/L) instantly. 1 mpg = 0.425144 km/L.
Fuel Economy Converter
11 units available
1 mpg = 0.425144 km/L
Formula:
km/L = mpg × 0.425143707With your value: 1 mpg = 0.42514371 km/L
Other Miles/Gallon (US) to Kilometer/Liter conversions
Miles/Gallon (US) to Kilometer/Liter Conversion Table
| Miles/Gallon (US) (mpg) | Kilometer/Liter (km/L) |
|---|---|
| 0.5 | 0.212572 |
| 1 | 0.425144 |
| 2 | 0.850287 |
| 5 | 2.125719 |
| 10 | 4.251437 |
| 15 | 6.377156 |
| 20 | 8.502874 |
| 25 | 10.628593 |
| 50 | 21.257185 |
| 100 | 42.514371 |
| 250 | 106.285927 |
| 500 | 212.571854 |
| 1000 | 425.143707 |
Kilometer/Liter to Miles/Gallon (US) Conversion Table
| Kilometer/Liter (km/L) | Miles/Gallon (US) (mpg) |
|---|---|
| 0.5 | 1.176073 |
| 1 | 2.352146 |
| 2 | 4.704292 |
| 5 | 11.760729 |
| 10 | 23.521458 |
| 15 | 35.282188 |
| 20 | 47.042917 |
| 25 | 58.803646 |
| 50 | 117.607292 |
| 100 | 235.214584 |
| 250 | 588.036459 |
| 500 | 1,176.072918 |
| 1000 | 2,352.145836 |
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
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/Liter (km/L)
Fuel Economy
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/Liter
To convert from Miles/Gallon (US) (mpg) to Kilometer/Liter (km/L), multiply the value by 0.425143707.
Formula: km/L = mpg × 0.425143707
Reverse: mpg = km/L × 2.3521458357
Step-by-Step Example
- Start with your value in Miles/Gallon (US). For example: 5 mpg
- Multiply by the conversion factor: 5 x 0.425143707
- The result is: 2.125719 km/L
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/Liter
Kilometers per liter (km/L) measures how many kilometers a vehicle can travel on one liter of fuel.
Common uses: fuel efficiency, vehicle specs, travel planning.
Frequently Asked Questions
How many Kilometer/Liter are in 1 Miles/Gallon (US)?
There are exactly 0.425143707 Kilometer/Liter in 1 Miles/Gallon (US). This means the conversion factor from Miles/Gallon (US) to Kilometer/Liter is 0.425143707.
What is the formula to convert Miles/Gallon (US) to Kilometer/Liter?
The formula to convert Miles/Gallon (US) to Kilometer/Liter is: km/L = mpg × 0.425143707. For example, to convert 10 Miles/Gallon (US) to Kilometer/Liter, you would multiply 10 by 0.425143707.
What is a Miles/Gallon (US)?
Miles per gallon (mpg) is the standard measure of fuel economy in the United States.
What is a Kilometer/Liter?
Kilometers per liter (km/L) measures how many kilometers a vehicle can travel on one liter of fuel.
What are the common uses of Miles/Gallon (US)?
The Miles/Gallon (US) is commonly used in car window stickers, fuel costs, environmental metrics.
Related Fuel Economy Conversions
Cite this page
UnitConvertLab. (2026). Miles/Gallon (US) to Kilometer/Liter converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/mpg_us-to-km_per_liter