Fuel Consumption L100km
Calculator
Results
- Consumption (L/100 km)
- 7.5
- Kilometres per litre
- 13.333333
- Miles per gallon (US)
- 31.361944
- Miles per gallon (imperial)
- 37.664124
Results
| Consumption (L/100 km) | 7.5 |
| Kilometres per litre | 13.333333 |
| Miles per gallon (US) | 31.361944 |
| Miles per gallon (imperial) | 37.664124 |
formula-map diagram
- Consumption (L/100 km)
- 7.5
- Kilometres per litre
- 13.333333
- Miles per gallon (US)
- 31.361944
- Miles per gallon (imperial)
- 37.664124
Formula breakdown
Formula
L/100 km = litres × 100 ÷ distance (km)= 7.5
Note
Simplified model: results use idealised textbook relationships and ignore real-world factors such as driving style, load, temperature, aerodynamic and rolling losses, drivetrain efficiency, tyre and brake condition and road surface. CO2 figures are tailpipe only, based on the standard 2.31 kg CO2 per litre of petrol (2.68 kg per litre of diesel), and exclude fuel production and distribution. Use them as estimates, not as legal, safety or load-rating figures.
More in Automotive and transport
See all →Frequently asked questions
What does L/100km measure and how is it different from miles per gallon?+
Liters per 100 kilometers measures how much fuel is used to travel a fixed distance, so a lower number means better efficiency. This is the inverse relationship of miles per gallon, where a higher number means better efficiency — the two scales run in opposite directions.
How is L/100km calculated from trip data?+
The formula is: L/100km = (liters of fuel used ÷ kilometers driven) × 100. For example, using 6 liters to drive 120 km gives (6 ÷ 120) × 100 = 5 L/100km.
Why is L/100km considered more intuitive for comparing savings than MPG?+
Because L/100km is linear with fuel used, the difference between two values directly represents the fuel saved over a fixed distance. With MPG, the relationship is inverse, so the same absolute MPG improvement (say from 15 to 20 MPG) saves far more fuel than an equal improvement at higher MPG (from 40 to 45 MPG) — a distinction L/100km makes visually obvious.
What's a common mistake when calculating L/100km from a fuel receipt and odometer?+
Using the fuel added at the pump to 'fill up' as the amount used for the distance since the last fill-up assumes the tank was completely full both times. If the first fill-up wasn't to the very top, the calculated consumption will be inaccurate for that tank of driving.
Does L/100km account for how or where you drove?+
No — the calculation itself is purely based on total fuel used over total distance and doesn't distinguish highway from city driving, load, terrain, or driving style. Two trips with the same L/100km result can have very different actual driving conditions behind them.