Fuel Efficiency Converter
Convert between km/L, L/100km, mpg (US), and mpg (UK) instantly.
Type in any field and the others update automatically.
Type in any field — the others update instantly. Note: L/100km is an inverse relationship.
Fuel efficiency conversions use km/L as the base unit.
Key conversions:
- km/L to L/100km = 100 / km/L (inverse relationship!)
- km/L to mpg (US) = km/L × 2.35215
- km/L to mpg (UK) = km/L × 2.82481
Note: L/100km is an inverse measure. Lower L/100km = better efficiency. Higher km/L or mpg = better efficiency.
Common references:
- Efficient car: 5 L/100km (20 km/L, 47 mpg US)
- Average car: 8 L/100km (12.5 km/L, 29 mpg US)
- SUV/Truck: 12 L/100km (8.3 km/L, 20 mpg US)
- Hybrid car: 4 L/100km (25 km/L, 59 mpg US)