Fuel Economy Converter
Convert between different fuel economy units including MPG, L/100km, km/L, and more.
Fuel Economy Conversion
Vehicle Fuel Economy Examples
Fuel Economy Reference Guide
Understanding Fuel Economy Units
MPG (Miles per Gallon): Distance traveled per unit of fuel
L/100km: Fuel consumed per 100 kilometers (lower is better)
km/L: Distance per liter (higher is better)
US vs UK Gallons: US gallon = 3.785L, UK gallon = 4.546L
Inverse Relationship: Higher MPG = Lower L/100km
Global Standards: Most countries use L/100km
Fuel Efficiency Categories
Excellent: 40+ MPG (5.9 L/100km or less)
Good: 30-39 MPG (6.0-7.8 L/100km)
Average: 20-29 MPG (8.1-11.8 L/100km)
Below Average: 15-19 MPG (12.4-15.7 L/100km)
Poor: Under 15 MPG (over 15.7 L/100km)
Hybrid/Electric: 50+ MPG equivalent
Conversion Quick Reference
• 30 MPG (US) ≈ 7.84 L/100km ≈ 12.75 km/L
• 40 MPG (US) ≈ 5.88 L/100km ≈ 17.01 km/L
• 50 MPG (US) ≈ 4.70 L/100km ≈ 21.26 km/L
• 6 L/100km ≈ 39.2 MPG (US) ≈ 16.67 km/L