Convert mpg to km/L
Miles per US gallon to kilometers per liter. Enter a value to convert, or use the mpg to km/L chart further down the page.
1 mile per US gallon equals 0.4251437074 kilometers per liter. Going the other way, 1 kilometer per liter = 2.352145833 miles per US gallon.
Note. L/100km is an inverse measure — a lower number means better economy — so converting to or from it uses a reciprocal, not a multiplication.
How to convert mpg to km/L
To convert miles per US gallon to kilometers per liter, multiply the mile per US gallon value by 0.4251437074. You can also divide by 2.352145833 to get the same answer.
km/L = MPG (US) × 0.4251437074
Worked example
Convert 30 MPG (US) to kilometers per liter:
30 MPG (US) = 12.75431122 km/L
mpg to km/L conversion chart
Use this mpg to km/L table for quick reference without typing anything.
| miles per US gallon (MPG (US)) | kilometers per liter (km/L) |
|---|---|
| 5 MPG (US) | 2.125718537 km/L |
| 10 MPG (US) | 4.251437074 km/L |
| 15 MPG (US) | 6.377155611 km/L |
| 20 MPG (US) | 8.502874149 km/L |
| 25 MPG (US) | 10.62859269 km/L |
| 30 MPG (US) | 12.75431122 km/L |
| 35 MPG (US) | 14.88002976 km/L |
| 40 MPG (US) | 17.0057483 km/L |
| 50 MPG (US) | 21.25718537 km/L |
| 60 MPG (US) | 25.50862245 km/L |
What is a mile per US gallon?
Miles per US gallon is the fuel economy figure used on American window stickers. A US gallon is smaller than an imperial gallon, so US MPG figures are about 17% lower than UK MPG for the same car.
What is a kilometer per liter?
Kilometers per liter is the fuel economy unit used in much of Asia, Africa and South America. Higher is better.
Frequently asked questions
How many km/L are in a mile per US gallon?
1 mpg equals 0.4251437074 km/L. Going the other way, 1 km/L is 2.352145833 mpg.
How do you convert mpg to km/L?
To convert miles per US gallon to kilometers per liter, multiply the mile per US gallon value by 0.4251437074. You can also divide by 2.352145833 to get the same answer.
What is 10 mpg in km/L?
10 mpg equals 4.251437074 km/L. The conversion chart on this page lists the other values people look up most often.
Related fuel economy conversions
Convert mpg to other units
Convert other units to km/L
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