Travel
Fuel volume for a trip
The distance supplies how far, the consumption supplies how much fuel per 100 kilometres, and the division by 100 turns that rate into a per-kilometre one.
The Formula
Litres = Distance x Consumption / 100
The distance supplies how far, the consumption supplies how much fuel per 100 kilometres, and the division by 100 turns that rate into a per-kilometre one.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| d | Trip distance | kilometres | Must be in kilometres if the consumption is per 100 kilometres. |
| C | Fuel consumption | litres per 100 km | Litres per 100 kilometres — an inverse measure, so lower is better. |
| V | Fuel volume burned | litres | The litres the trip requires at that consumption. |
What Each Symbol Means
dkilometres
Trip distance
Must be in kilometres if the consumption is per 100 kilometres.
Clitres per 100 km
Fuel consumption
Litres per 100 kilometres — an inverse measure, so lower is better.
Vlitres
Fuel volume burned
The litres the trip requires at that consumption.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate fuel cost page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate Fuel Cost, filed under Everyday Life. Every number the guide produces comes from substituting into this one line.