Fuel Economy | How to use and interpret results
Calculate both kilometres per litre and litres per 100 kilometres from one trip. A larger km/L value and a smaller L/100km value indicate opposite sides of the same ratio.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
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How to use this tool
Enter distance in kilometres and fuel used in litres for the same interval. Mixing an odometer interval with an unrelated refuelling amount will not describe that trip.
Results and examples
400 km on 30 L is about 13.33 km/L and 7.5 L/100km. These are reciprocal expressions of the same consumption, not two measurements to average together.
Worked example
400 km on 30 L is about 13.33 km/L and 7.5 L/100km. These are reciprocal expressions of the same consumption, not two measurements to average together.
Limitations
- Refuelling error, idling and driving conditions are not diagnosed.
- The result is not a certified fuel-economy test or a promise of future performance.
Fields
| Field | Guidance and constraints |
|---|---|
| Distance driven (km) | Check the unit and format displayed beside this field. |
| Fuel volume (L) | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
What do 400 km and 30 L produce?
400 km on 30 L is about 13.33 km/L and 7.5 L/100km. These are reciprocal expressions of the same consumption, not two measurements to average together.
Is this equivalent to a certified test figure?
Refuelling error, idling and driving conditions are not diagnosed. The result is not a certified fuel-economy test or a promise of future performance.
