Fuel economy converter
Convert L/100 km to km/L and back — the two ways of writing the same consumption.
What the result means
Australian windscreen stickers use litres per 100 kilometres. A lower L/100 km is better. km/L is the inverse: a higher number is better.
How it is calculated
km/L = 100 ÷ (L/100 km). L/100 km = 100 ÷ km/L
- L/100 km: The official Australian consumer label figure.
The two units are reciprocals scaled by 100.
Assumptions
- Estimates only — not tax, legal, credit or financial advice. Check the official source or your contract before relying on a figure.
- Steady conversion only — not a test-cycle adjustment.
Worked example
7.2 L/100 km
A typical small-car sticker.
- km/L
- 100 ÷ 7.2 ≈ 13.89 km/L
Use L/100 km in the trip fuel calculator — that is the figure on the car.
They measure the same thing
7.2 L/100 km means 100 km uses 7.2 L, so each litre takes you 100 ÷ 7.2 ≈ 13.9 km. US mpg is a different gallon and is not converted here.
Questions
Is a bigger L/100 km better?
No. Bigger L/100 km uses more fuel. Bigger km/L uses less.
Related calculators
- FuelEstimate litres used and trip cost from distance, L/100 km consumption and the price at the pump, including an optional return trip.
- Travel timeEstimate driving time from distance and average speed. This is not live traffic.
- PercentageFind a percentage of a number, reverse a percentage, or calculate percentage increase, decrease and difference.
Sources
Green Vehicle Guide (Australian Government)
Understanding fuel consumption (L/100 km)
Last reviewed 2026-08-19
Travel · Last reviewed 2026-08-19
Estimates only. Not tax, legal or financial advice. Check official sources before relying on a figure.
Printed from OzCalc (ozcalc.com). Last reviewed 2026-08-19. Estimates only — not tax, legal or financial advice.