Fuel Efficiency Converter
Convert between MPG, L/100km, and km/L with cost and emissions estimates
Conversions
MPG (US)
30
MPG (UK)
36.03
km/L
12.75
L/100km
7.84
km/gallon (US)
48.28
Cost & Emissions
Cost per 100 miles (US)
$11.67
at $3.50/gallon
Cost per 100km (EU)
14.11 EUR
at 1.80 EUR/liter
CO2 per 100km
18.11 kg
gasoline vehicle
Efficiency Ratings
| Rating | MPG (US) | L/100km |
|---|---|---|
| Excellent | 40+ | < 5.9 |
| Very Good | 30-40 | 5.9-7.8 |
| Good | 25-30 | 7.8-9.4 |
| Average | 20-25 | 9.4-11.8 |
| Below Average | 15-20 | 11.8-15.7 |
| Poor | < 15 | > 15.7 |
Understanding the Units
MPG (US): Miles per US gallon (3.785 liters). Used in the United States.
MPG (UK): Miles per Imperial gallon (4.546 liters). Used in the UK. Higher numbers than US MPG.
L/100km: Liters per 100 kilometers. Used in Europe, Australia, and most of the world. Lower is better.
Note: L/100km is inversely related to distance-per-volume units. A car that gets 30 MPG (US) uses about 7.8 L/100km.