Miles per US gallon to Kilometers per liter
Convert Miles per US gallon to Kilometers per liter instantly. Free online fuel economy unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Miles per US gallon to Kilometers per liter conversions.
Reserved above the conversion cards and below the converter.
Formula
1 mpg = 0.4251437074 km/L
km/L = mpg × 0.4251437074
mpg = km/L ÷ 0.4251437074
Conversion table
| 1 mpg | 0.425144 km/L |
| 2 mpg | 0.850287 km/L |
| 5 mpg | 2.125719 km/L |
| 10 mpg | 4.251437 km/L |
| 20 mpg | 8.502874 km/L |
| 50 mpg | 21.257185 km/L |
| 100 mpg | 42.514371 km/L |
Related conversions
- Miles per US gallon → Miles per imperial gallon
- Miles per US gallon → Meters per liter
- Miles per US gallon → Liters per 100 km
- Miles per US gallon → Liters per km
- Miles per US gallon → US gallons per 100 miles
- Kilometers per liter → Miles per imperial gallon
- Kilometers per liter → Meters per liter
- Kilometers per liter → Liters per 100 km
- Kilometers per liter → Liters per km
- Kilometers per liter → US gallons per 100 miles
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilometers per liter are in one miles per us gallon?
One mpg equals 0.4251437074 kilometers per liter.
How do I convert miles per us gallon to kilometers per liter?
Multiply the number of miles per us gallon by 0.4251437074 to get kilometers per liter. To go the other way, multiply kilometers per liter by 2.352145833 (or divide by 0.4251437074) to get miles per us gallon.
Is this conversion exact?
Yes. This conversion uses the exact defined relationship between miles per us gallon and kilometers per liter, so the result shown is mathematically precise (rounded only for display).
When is miles per us gallon to kilometers per liter conversion commonly used?
It is commonly used in automotive fuel efficiency ratings, vehicle comparisons and shopping, as well as EPA, WLTP and other international fuel economy standards.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
Miles per US gallon and Kilometers per liter are both units used to measure fuel economy. Miles per US gallon (mpg) measures how many miles a vehicle travels using one US gallon of fuel; a higher number means better efficiency. It is the standard fuel economy unit used in the United States. Kilometers per liter (km/L) measures how many kilometers a vehicle travels using one liter of fuel; a higher number means better efficiency. It is a common metric fuel economy unit. This converter uses the precise relationship 1 mpg = 0.4251437074 km/L (equivalently 1 km/L = 2.352145833 mpg), so results stay accurate for automotive fuel efficiency ratings, vehicle comparisons and shopping, as well as EPA, WLTP and other international fuel economy standards.