Trip record
Input: 480 km with 40 L
Result: 12 km/L
Fuel Economy Calculator
Calculate your vehicle's fuel economy (MPG or km/L) by entering distance traveled and fuel consumed. Track and compare fuel efficiency over multiple trips.
Fuel Economy Calculation
Formula and decision logic
Fuel economy compares distance and fuel used, and it can be expressed as kilometers per liter or liters per 100 kilometers.
km/L = distance / fuel used
L/100km = 100 / (km/L)
Worked examples
Efficiency comparison
Input: 15 km/L
Result: About 6.67 L/100km
How to use this calculator
- 1Enter the distance traveled
- 2Enter the fuel consumed
- 3View your fuel economy in km/L or MPG
How to read the result
- Higher km/L means better efficiency, while lower L/100km means the same thing expressed from the opposite angle.
- This calculator is useful for comparing cars, driving habits, and route types.
Common input mistakes
- Comparing km/L and L/100km without noticing that one should go up while the other should go down.
- Using partial refill data that does not represent the actual fuel used for the trip.
Frequently asked questions
How do I calculate fuel economy?
Enter the distance traveled and the amount of fuel used. The calculator shows fuel economy in km/L or MPG.
What units are supported?
You can use kilometers/liters or miles/gallons depending on your preference.
How can I improve my fuel economy?
Maintain steady speeds, keep tires properly inflated, reduce excess weight, and perform regular maintenance.