Convert miles per gallon to liters per 100 km quickly and accurately using this free online converter
Used for comparing car fuel economy across regions. Lower L/100km means better efficiency, while higher mpg means better efficiency — so the two scales move in opposite directions.
💡 Europe, Canada, and most of the world use L/100km; the US and UK use mpg (note: UK gallons are larger than US gallons, so UK mpg differs from US mpg).
L/100km = 235.215 ÷ mpg
Example: 1 mpg = 235.215 L/100km
Use L/100km for European and Canadian car listings; use mpg for US market comparisons.
Common uses: car specs, fuel cost estimation, and trip planning.
How do I convert mpg to L/100km?
Divide 235.215 by the mpg value — the conversion is reciprocal. For example: 30 mpg → 235.215 ÷ 30 = 7.84 L/100km.
When should I use Liters per 100 km instead of Miles per gallon?
Use L/100km for European and Canadian car listings; use mpg for US market comparisons.
Is this converter accurate?
Yes. We use internationally recognized conversion factors, updated to current standards.
| Miles per gallon (mpg) | Liters per 100 km (L/100km) |
|---|---|
| 3 mpg | 78.405 L/100km |
| 4 mpg | 58.8038 L/100km |
| 5 mpg | 47.043 L/100km |
| 6 mpg | 39.2025 L/100km |
| 7 mpg | 33.6021 L/100km |
| 8 mpg | 29.4019 L/100km |
| 10 mpg | 23.5215 L/100km |
| 12 mpg | 19.6013 L/100km |
| 15 mpg | 15.681 L/100km |
| 20 mpg | 11.7608 L/100km |