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Fuel Cost Calculator
Estimate the fuel needed and the cost of a trip from distance, mileage and your local fuel price.
Under 15 seconds
Updated 14 Oct 2026
Results
Estimated trip cost
₹2,000
One way
- Fuel needed
- 20 litres
- Total distance
- 300 km
- Cost per km
- ₹6.67
Embed this calculatorShow code
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<iframe
src="https://calpaisa.com/embed/calculators/fuel-cost-calculator/"
width="100%"
height="640"
frameborder="0"
loading="lazy"
title="Fuel Cost Calculator">
</iframe>Fuel needed = distance ÷ mileage, and trip cost = fuel needed × fuel price. For example, a 300 km trip in a car that gives 15 km per litre needs 20 litres; at an example price of ₹100 a litre that costs ₹2,000. Enter your own local fuel price — prices change and vary by city.
Visual breakdown
A visual view of your calculation.
Interactive charts arrive here soon.
Smart Insights
Generated from the numbers you entered — no guesswork.
- 300 km ÷ 15 km = 20 litres; × ₹100 = ₹2,000.
- Real mileage depends on traffic, speed, load and air-conditioning, so treat this as an estimate.
What is the Fuel Cost Calculator?
What the tool does, who it is for and what it cannot tell you.
A fuel cost calculator estimates how much fuel a trip needs and what it will cost, from the distance, your vehicle's mileage and the fuel price.
CalPaisa does not show or fetch fuel prices. Enter the price at your local pump, because prices change and differ between cities.
How does the Fuel Cost Calculator work?
Each step the calculator runs, in plain language.
- 1
Pick the fuel and trip type
Petrol, diesel or CNG; one way or round trip.
- 2
Enter distance and mileage
Use km per litre for petrol and diesel, km per kg for CNG.
- 3
Enter your fuel price
Per litre, or per kg for CNG, from your local pump.
Fuel Cost Calculator formula
The exact maths behind every number on this page.
Fuel needed = Distance ÷ Mileage; Cost = Fuel needed × Price
- Distance
- Total distance in km (one-way × 2 for a round trip)
- Mileage
- km per litre (petrol/diesel) or km per kg (CNG)
- Price
- Your local price per litre or per kg
Fuel Cost Calculator calculation example
Hypothetical example: a 120 km one-way trip, round trip, in a diesel car giving 20 km per litre, at an example price of ₹90 a litre (not a current price).
- 1Total distance120 × 2 = 240 km
- 2Fuel needed240 ÷ 20 = 12 litres
- 3Cost12 × 90 = ₹1,080
The round trip would cost about ₹1,080 in fuel.
Important assumptions
What this calculation includes, and what it leaves out.
- Mileage stays constant for the whole trip.
- Fuel prices are not built in; the result uses the price you enter.
- Tolls, parking and maintenance are not included.
Financial tips
Practical guidance to act on your result.
- Use your vehicle's real-world mileage rather than the brochure figure for a closer estimate.
- Add tolls and parking separately — they are not included.
Frequently asked questions
Short, direct answers to the questions we hear most.
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Disclaimer
CalPaisa calculators are for general information and planning only. Results are estimates based on the values you enter and standard formulas, and may differ from the figures your bank, employer, or tax authority applies. Nothing here is investment, tax, or legal advice. Please confirm important decisions with a qualified professional. Read our financial disclaimer, learn how CalPaisa works, or tell us about a calculation you think is wrong.