METHOD
Formula and method
L/100 km = litres / kilometres × 100. US and imperial gallons are distinct units.
Fuel consumption from distance driven and fuel used
Measure consumption from distance travelled and fuel used.
01
Your inputs
Starting values are an example. Replace them with your own.
Your inputs stay in your browser.
02
Your result
Enter your details and run the calculation.
About this result
Informational calculations. Check assumptions, dates and jurisdiction before making a decision.
Full disclaimerHow do you work out fuel consumption per 100 km?
The calculator divides the litres you filled by the kilometres driven and multiplies by 100 to give litres per 100 km. For example, 21 litres over 300 km is 7 L/100 km, or about 33.6 miles per US gallon. You can enter distance in kilometres or miles and fuel in litres, US gallons or imperial gallons, which are different units. For the most accurate figure, fill the tank to the top, drive, then fill to the top again and enter that amount.
TRACEABLE
Sources and validity
Basic arithmetic or geometry using the formula shown. Uses only your inputs.
How we maintain data