The short answer
- mpg (US) = 235.2145833 ÷ L/100 km
- 7 L/100 km = 33.60208 mpg (US)
Worked example7 L/100 km = 33.60208 mpg (US)
To convert litres per 100 km to miles per US gallon, use mpg (US) = 235.2145833 ÷ L/100 km.
Litre per 100 km. Litres per 100 kilometres measures fuel used per distance, so a lower number is more efficient.
Mile per us gallon. Miles per US gallon measures distance per unit of fuel, so a higher number is more efficient. UK figures use the larger imperial gallon, so the same car shows a higher UK mpg.
| Litres per 100 km (L/100 km) | Miles per us gallon (mpg (US)) |
|---|---|
| 3 | 78.40486 |
| 3.5 | 67.20417 |
| 4 | 58.80365 |
| 4.5 | 52.26991 |
| 5 | 47.04292 |
| 5.5 | 42.76629 |
| 6 | 39.20243 |
| 6.5 | 36.18686 |
| 7 | 33.60208 |
| 7.5 | 31.36194 |
| 8 | 29.40182 |
| 9 | 26.13495 |
| 10 | 23.52146 |
| 11 | 21.38314 |
| 12 | 19.60122 |
| 14 | 16.80104 |
| 15 | 15.68097 |
| 20 | 11.76073 |
Values are rounded to 7 significant figures.
Use mpg (US) = 235.2145833 ÷ L/100 km. For example, 7 L/100 km = 33.60208 mpg (US).
7 L/100 km is 33.60208 mpg (US).
Yes. Both units have exact legal definitions, so the factor is exact. Values on this page are rounded to 7 significant figures.