Miles per US Gallon to Kilometers per Liter Converter
1 mile per US gallon ≈ 0.425143707 kilometers per liter
US mpg figures are about 17% lower than imperial mpg for the same car, because the US gallon is smaller.
1 mile per US gallon equals 0.425144 kilometers per liter
How to convert miles per US gallon to kilometers per liter
Distance per fuel (mpg or km/L) increases with economy; fuel per distance (L/100 km) decreases. Converting between these forms is reciprocal, requires a positive value and depends on whether a gallon is US or Imperial.
km/L = mpg (US) × 0.4251437074One mile per US gallon is 0.4251437074 kilometers per liter, so a single multiplication converts any value.
4.25144 km/L ≈ 10 × 0.4251437074US mpg figures are about 17% lower than imperial mpg for the same car, because the US gallon is smaller.
Miles per US gallon to kilometers per liter conversion table
Common values in miles per US gallon, converted to kilometers per liter.
| Miles per US gallon (mpg (US)) | Kilometers per liter (km/L) |
|---|---|
| 10 | 4.2514371 |
| 15 | 6.3771556 |
| 20 | 8.5028741 |
| 25 | 10.628593 |
| 30 | 12.754311 |
| 35 | 14.88003 |
| 40 | 17.005748 |
| 50 | 21.257185 |
| 60 | 25.508622 |
About these units
mile per US gallonmpg (US)
Distance per US gallon. The US fuel-economy standard.
kilometer per literkm/L
Distance travelled per litre of fuel. Higher is better.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.