Fuel Cost Calculator
Find what a journey costs in petrol or diesel, split it between the people travelling, and see the monthly total. Nothing is uploaded.
Your real mileage, not the showroom figure. City traffic is usually well below it.
22 is a normal working month. Set it to 0 for a one-off journey.
| Period | Fuel | Cost |
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How to use it
- Type the one-way distance. Leave Return journey ticked for a commute, untick it for a one-way drive.
- Enter your vehicle's real mileage and today's fuel price.
- If you are sharing the car, set how many people split the bill.
- Set trips per month to see what the commute costs over a month and a year.
The arithmetic, in one line
Fuel cost is distance ÷ mileage × price. Twenty kilometres each way is forty kilometres; at 18 km per litre that is 2.22 litres; at ₹105 a litre, ₹233 for the day. Everything else on this page is that same sum multiplied out.
The number that matters most is mileage, and it is the one people get wrong. The figure on the brochure is measured under test conditions — steady speed, light load, no air conditioning. Real city driving is often a third lower. If your monthly fuel bill is consistently higher than this page says, your mileage is lower than you think: adjust it here until the monthly figure matches what you actually spend, and you will have a number you can plan with.
Two things this does not cover. It is fuel only — tolls, parking, servicing, tyres and insurance are real costs of the same journey and often add as much again over a year. And it assumes a steady price, while pump prices move. For a long trip planned weeks ahead, add a little headroom.
Frequently asked questions
Where do I find my vehicle's real mileage?
Fill the tank, reset the trip meter, drive normally, then fill up again and divide the kilometres shown by the litres it took. Do it twice and average the two. The showroom figure is measured under test conditions and is almost always higher than what you will see in city traffic.
Does this include tolls, parking and servicing?
No. This is fuel only. A fair running cost also includes tolls, parking, tyres, servicing and insurance, which together often add as much again over a year. Treat the answer here as the floor, not the full cost of the journey.
Why is my real fuel bill higher than this?
Usually mileage. Stop-start traffic, air conditioning, a loaded boot, under-inflated tyres and short trips where the engine never warms up all cut it, sometimes by a third. If your actual spend is consistently higher, lower the mileage figure until it matches and use that number in future.
Is anything I type sent anywhere?
No. The whole calculation happens in JavaScript inside your own browser. Nothing is uploaded and nothing is saved — close the tab and it is gone.