Everyday
Fuel Cost Calculator
Work out how much fuel a trip needs and what it will cost, including the cost per kilometre and the split between passengers.
Updated 14 Oct 2026
Covering 450.0 km at 18.0 km per litre uses about 25 litres. At 105.00 per litre the trip costs 2,625.00.
Enter the distance, your vehicle's fuel efficiency and the current fuel price. The calculator returns the litres needed, the total cost, the cost per kilometre and each passenger's share.
What is the Fuel Cost Calculator?
Fuel cost depends on three things: how far you are going, how efficiently the vehicle uses fuel, and what fuel currently costs. This calculator combines them and splits the result between passengers.
How to use the Fuel Cost Calculator
- Enter the one-way or round-trip distance in kilometres.
- Enter your vehicle's efficiency in kilometres per litre.
- Enter the current price per litre.
- Optionally enter the number of passengers to split the cost.
Formula
Total cost = fuel needed × price per litre
Cost per km = total cost ÷ distance
Per person = total cost ÷ number of people
Use realistic efficiency, not the manufacturer's figure. Real-world consumption is typically 10–25% worse than the tested number, and worse still in city traffic, with a full load, or with air conditioning running.
How the calculation works
Dividing distance by efficiency gives the litres required. Multiplying by the price gives the cost. Everything else is a further division.
Worked example
A 450 km trip in a vehicle doing 18 km per litre, with fuel at ₹105 per litre, shared by 3 people:
- Fuel needed = 450 ÷ 18 = 25 litres
- Total cost = 25 × 105 = ₹2,625
- Cost per km = ₹5.83
- Each person = ₹875
Uses and benefits
- Budget a road trip before setting off.
- Compare driving against train or flight costs.
- Work out a fair share for carpooling.
- Estimate a monthly commuting cost.
Frequently asked questions
Your own, measured over a few tanks: divide the kilometres driven by the litres filled. Manufacturer figures come from standardised tests and are usually 10–25% better than real-world driving, especially in city traffic.
No, it covers fuel only. Add tolls, parking and any charges separately. Over a vehicle's lifetime, depreciation and maintenance often cost more than the fuel.
References
This covers fuel only. Tolls, parking, wear and depreciation add materially to the real cost of driving — often more than the fuel itself over a vehicle's life.