Mileage & Fuel Economy Calculator
Convert between km/L, MPG (US & UK), and L/100km to check vehicle performance
km
L
Calculation Result
Fuel Economy
18.57 km/L
European metric: 5.38 L/100kmUS MPG
43.68 MPG
UK MPG (Imperial)
52.46 MPG
Liters per 100km
5.38 L
How this calculator works
1
Input distance traveled on a full tank.
2
Input volume of fuel consumed.
3
Instantly view km/L, US MPG, UK MPG, and L/100km.
Formula & Mathematics
Mileage and Fuel Economy Formulas
km/L = km / Liters; MPG (US) = km/L × 2.352; L/100km = 100 / (km/L)
Standard global fuel economy benchmark conversion.
Worked Example
450 km traveled using 25 liters of fuel
Distance = 450 km, Fuel = 25 L.
• Economy = 450 / 25 = 18.0 km/L
• MPG (US) = 18 × 2.352 = 42.3 MPG
• European rating = 100 / 18 = 5.56 L/100km
Vehicle delivers 18.0 km/L (42.3 MPG US).
Frequently Asked Questions
An Imperial gallon in the UK is approximately 4.546 liters, whereas a US liquid gallon is approximately 3.785 liters.
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