About the Fuel Cost Calculator
Whether you are pricing a delivery run, settling up after a road trip or deciding between driving and flying, the arithmetic is the same: distance divided by efficiency, multiplied by fuel price. This calculator handles all three common efficiency units so you do not have to convert MPG to L/100km in your head first.
How to use the Fuel Cost Calculator
- Enter the trip distance in kilometres or miles.
- Enter your vehicle's efficiency and choose its unit — km/L, L/100km or MPG.
- Add the current fuel price and the number of people sharing.
- Tick return journey if you are coming back, then read the total and per-person cost.
Why use this tool?
Three efficiency units
km/L, L/100km and US MPG are all accepted and converted internally.
Cost per person
Split the total between passengers for carpooling and expense claims.
Cost per 100 km
A normalised figure that makes comparing vehicles or routes straightforward.
Frequently asked questions
Is real consumption higher than the rated figure?
Usually. City traffic, air conditioning, a loaded boot, roof boxes and high speeds all push consumption up. Adding 10-15% gives a realistic budget.
How do I convert MPG to L/100km?
Divide 235.215 by the US MPG figure. 30 MPG is about 7.8 L/100km.
Does this work for an electric car?
Not directly — enter kWh/100km as your efficiency and the electricity price per kWh, and treat the litre labels as kWh.