Fuel Economy Calculator
Measure actual fuel economy from a trip odometer distance and the amount of fuel needed to refill the tank.
Miles per gallon29.17 mpg
Liters / 100 km8.06 L/100km
Kilometers / liter12.4 km/L
How this tool works
MPG = miles ÷ US gallons. L/100 km = 235.214583 ÷ MPG. km/L = MPG × 0.425143707.
Example
350 miles on 12 US gallons is about 29.17 MPG, 8.06 L/100 km and 12.40 km/L.
Common questions
Does MPG use US or Imperial gallons?
This calculator uses US gallons.
Why might dashboard MPG differ?
Vehicle estimates can use different sampling and calibration. Full-tank measurements also vary with fill level and pump cutoff.