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Fuel cost calculator

Written and reviewed by Omm · Last reviewed · General information, not investment advice

See what a trip or a month of driving costs in fuel. Enter the price at your pump, the mileage your vehicle actually gives and the distance; the calculator shows the fuel needed, the cost of the trip, the cost per kilometre and the monthly and yearly bill. It works for cars, bikes and scooters.

Related: Mileage calculator · Car running cost calculator · EV vs petrol car cost calculator

Fuel

Between 1 and 1000

Between 1 and 200

km

Between 1 and 100000

km

Between 0 and 100000

Real-world mileage and sharing
%

Between 0 and 50

Between 1 and 20

The price and mileage shown at first are examples, not today’s figures. Enter the price at your pump and the mileage you actually get.

A 300 km trip uses about 16.7 litres and costs ₹1,667 in fuel, which is ₹5.56 a kilometre.

Fuel cost of the trip

₹1,667

Fuel cost per km

₹5.56

Fuel used on the trip (litres)

16.67

Fuel cost per month

₹5,556

Fuel cost per year

₹66,667

Fuel only. Tolls, parking, servicing and tyres are not included; the car running cost calculator adds maintenance.

How it works

Cost per km = fuel price ÷ mileage; fuel for a trip = distance ÷ mileage; trip cost = distance × cost per km

Divide the price of a litre (or a kg of CNG) by the kilometres your vehicle runs on it, and you have the fuel cost of one kilometre. Multiply by any distance to get the cost of a trip, a month or a year.

Use the mileage you really get, not the figure in the brochure. If you only know the brochure figure, open "Real-world mileage and sharing" and lower it by a percentage; the calculator then uses the lower mileage. To measure your own mileage, use the mileage calculator.

Fuel prices differ by city and change often, so the price is typed in by you and is never looked up. The figures shown at first are examples.

Example. With petrol at ₹100 a litre and a mileage of 18 km/l, each kilometre costs ₹5.56. A 300 km trip uses 16.7 litres and costs ₹1,667; 1,000 km a month costs ₹5,556.

Read the guide: EV vs petrol car in India: running cost, payback and what to check.

Frequently asked questions

How do I calculate the fuel cost of a trip?

Divide the distance by your mileage to get the litres needed, then multiply by the price per litre. For example, 300 km at 15 km/l needs 20 litres; at ₹100 a litre that is ₹2,000.

How do I calculate petrol cost per km?

Divide the petrol price per litre by your mileage in km per litre. At ₹100 a litre and 20 km/l the cost is ₹5 per km; at 12 km/l it is ₹8.33 per km.

How much petrol is needed for 100 km?

Divide 100 by your mileage. A vehicle that gives 20 km/l needs 5 litres for 100 km, one that gives 15 km/l needs 6.67 litres, and a bike that gives 50 km/l needs 2 litres.

Why should I lower the brochure mileage?

The certified figure in a brochure is measured in a standard test. On the road, traffic, air conditioning, load and driving style usually give a lower mileage. Measuring your own mileage over a few tanks is more reliable than any adjustment.

Is CNG cheaper to run than petrol?

Often, because a kg of CNG usually takes a car further than a litre of petrol and has cost less. It depends on the prices in your city and your car, so enter both and compare the cost per km. A CNG kit or a CNG model also costs more to buy.

Does this include tolls, parking or servicing?

No, only fuel. For fuel plus maintenance use the car running cost calculator, and add tolls and parking to the trip cost yourself.

Sources

Rules, rates and definitions on this page come from these official sources. Check the current position there before you decide.

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