Fuel Economy Converter
Convert between MPG (US), MPG (UK), km/L, and L/100km instantly.
Type in any field and the others update automatically.
Type in any field — the others update instantly. Note: L/100km is an inverse scale (lower = better economy).
Quick Reference
30 MPG (US) = 36.03 MPG (UK) = 12.75 km/L = 7.84 L/100km
50 MPG (US) = 60.05 MPG (UK) = 21.26 km/L = 4.70 L/100km
10 km/L = 23.52 MPG (US) = 28.25 MPG (UK) = 10.00 L/100km
50 MPG (US) = 60.05 MPG (UK) = 21.26 km/L = 4.70 L/100km
10 km/L = 23.52 MPG (US) = 28.25 MPG (UK) = 10.00 L/100km
Fuel economy conversions between common international standards:
- 1 MPG (US) = 0.8327 MPG (UK) = 0.4251 km/L
- 1 MPG (UK) = 1.201 MPG (US) = 0.3540 km/L
- 1 km/L = 2.352 MPG (US) = 2.825 MPG (UK)
L/100km is an inverse scale — lower numbers mean better fuel economy:
L/100km = 100 / km/L
km/L = 100 / L/100km
Conversion formulas:
- MPG (US) to km/L:
km/L = MPG × 0.425144 - MPG (UK) to km/L:
km/L = MPG × 0.354006 - km/L to L/100km:
L/100km = 100 / km/L
Reference values:
- Compact car: ~35 MPG (US) = ~6.7 L/100km
- SUV: ~25 MPG (US) = ~9.4 L/100km
- Hybrid: ~50 MPG (US) = ~4.7 L/100km