worldofcalcsFuel Cost Calculator
Total Distance
500 km
Fuel Needed
33.33 L
Total Fuel Cost
₹3,166.67
Cost per km
₹6.33/km
How much fuel will your trip cost?
This calculator works out the fuel you need and what it will cost for any trip, from your car or bike's mileage (km per litre) and the fuel price. Tick round trip to double the distance.
Fuel cost formula
Fuel needed = distance ÷ mileage · Cost = fuel needed × price per litre
Cost per km is simply the price per litre divided by the mileage. Use the mileage you actually get, not the ARAI figure in the brochure; real-world mileage is often 15–25% lower, especially in city traffic.
Getting better mileage
- Keep tyres at the recommended pressure; under-inflated tyres can cut mileage noticeably.
- On the highway, driving at 80–90 km/h rather than 110–120 km/h uses noticeably less fuel.
- Running the AC costs some mileage, but on the highway it is usually better than driving with the windows down.
- Toll charges can add a lot on highway trips; include them in your budget.
- CNG cars usually cost about half as much per km as petrol, and charging an EV at home costs less still. Compare them with the EV charging cost calculator.
- Fuel prices differ between states because of VAT, so filling up before crossing a border can save a little.
Worked example
- A 500 km trip in a car that gives 15 km a litre, with petrol at ₹95
- Fuel needed = 500 ÷ 15 = 33.3 litres
- Cost = 33.3 × ₹95 = ₹3,167
- Cost per km = ₹95 ÷ 15 = ₹6.33
- Round trip (1,000 km): ₹6,333 in fuel
Fuel cost per km
Cost per kilometre at different mileages and fuel prices.
| Mileage | At ₹90/L | At ₹95/L | At ₹105/L |
|---|---|---|---|
| 10 km/L | ₹9.00 | ₹9.50 | ₹10.50 |
| 12 km/L | ₹7.50 | ₹7.92 | ₹8.75 |
| 15 km/L | ₹6.00 | ₹6.33 | ₹7.00 |
| 18 km/L | ₹5.00 | ₹5.28 | ₹5.83 |
| 20 km/L | ₹4.50 | ₹4.75 | ₹5.25 |
| 25 km/L | ₹3.60 | ₹3.80 | ₹4.20 |
| 40 km/L | ₹2.25 | ₹2.38 | ₹2.63 |
| 50 km/L | ₹1.80 | ₹1.90 | ₹2.10 |
Multiply the cost per km by your monthly kilometres to estimate your monthly fuel bill.