PetrolCalculator

Fuel calculator

How Much Diesel Will I Use?

Estimate diesel quantity required for a journey.

Estimate diesel required

Enter journey details to estimate diesel required.

What your result means

This estimates diesel quantity for the journey distance and UK MPG entered. It is not a diesel cost-per-mile calculator and does not need a fuel price.

Worked example

Using 100 miles and 50 UK MPG:

UK gallons used
2
Diesel required
9.1 litres

Kilometres are converted to miles before the same UK-MPG calculation is applied.

Formula

UK gallons=Journey milesUK MPG\text{UK gallons}=\frac{\text{Journey miles}}{\text{UK MPG}}
Litres=UK gallons×4.54609\text{Litres}=\text{UK gallons}\times4.54609

Illustrative diesel quantity

DistanceUK MPGDiesel used
50 miles405.7 litres
100 miles4011.4 litres
100 miles509.1 litres
200 miles5018.2 litres

Helpful questions

Is this the same as diesel cost per mile?

No. This estimates diesel quantity used. Diesel Cost Per Mile estimates money from price and MPG.

Does better MPG reduce litres used?

Yes. For the same distance, higher UK MPG means fewer UK gallons and litres are required.

Can I enter kilometres?

Yes. Kilometres are converted using the central kilometre-to-mile constant before the UK MPG calculation.

Why can actual diesel use differ?

Traffic, speed, vehicle load, weather and driving style can change real-world MPG. Use the MPG Calculator to measure your figure.

Related calculators