Fuel Cost Calculator: Petrol, Diesel and CNG Cost for a Trip
Enter the distance, your vehicle's mileage and the fuel price. See the fuel needed, the cost and the cost per km.
- Nothing you type is stored
- Free
- No signup
Fuel cost
₹1,702
- Fuel needed
- 16.67 litres
- Cost per km
- ₹6.81
- Total distance
- 250 km
Default prices are Delhi rates (Oct 2026). Enter your local price for an exact figure.
How to use
- Enter the distance in km and tick round trip if you will come back.
- Choose petrol, diesel or CNG and enter your mileage.
- Check the fuel price for your city and edit it if needed.
Good to know
Fuel needed = distance ÷ mileage, and cost = fuel needed × price. A 250 km drive in a car that gives 15 km/l needs 16.7 litres; at ₹102.12 a litre that is about ₹1,702, or ₹6.81 per km.
Default prices are Delhi retail prices as of October 2026: petrol ₹102.12/l (26 Oct 2026), diesel ₹95.20/l (20 Oct 2026) and CNG ₹86.98/kg (IGL, from 29 Aug 2026). Prices differ by state because of VAT and change often, so enter your local pump price.
Use your real-world mileage, not the ARAI figure in the brochure. City traffic, AC, load and tyre pressure all lower it. For a daily commute, add trips per month under More options to see the monthly fuel bill.
Questions
How do I calculate petrol cost for a trip?
Divide the distance by mileage to get litres, then multiply by the price per litre. 300 km ÷ 15 km/l = 20 l × ₹102.12 = ₹2,042.
What is the petrol price used here?
Delhi's ₹102.12 per litre as of 26 October 2026. It is only a starting value — type in your city's price.
How is CNG cost calculated?
CNG is sold per kg, so enter mileage in km/kg. 250 km at 22 km/kg needs 11.4 kg; at ₹86.98/kg that is about ₹988.
Why is my real cost higher than the estimate?
Traffic, idling, AC and short trips use extra fuel. Measure your own mileage with our mileage calculator for a better estimate.
Is my data stored?
No. Everything is calculated on your device.