Fuel Cost Calculator
Work out petrol, diesel or CNG cost for a trip from distance, mileage and fuel price, and split it among friends.
About Fuel Cost Calculator
This fuel cost calculator estimates how much petrol, diesel or CNG a trip will cost. Enter the distance in km, tick round trip if you are coming back, add your vehicle’s mileage and today’s fuel price, and it shows the fuel needed and the total cost.
You can also add tolls and parking and split the total among the people travelling, which makes it a handy trip cost calculator for road trips with friends or family. Fuel prices are not built in, so enter the current rate in your city. It is free, needs no sign-up and runs in your browser.
How to use Fuel Cost Calculator
- Enter the trip distance and tick round trip if you are coming back.
- Enter your vehicle’s mileage and today’s fuel price.
- Add tolls or parking if you want them shared too.
- Read the fuel needed, total cost and each person’s share.
Frequently asked questions
How is the fuel cost calculated?
Fuel needed = distance ÷ mileage. Cost = fuel needed × price per litre (or per kg for CNG). Tolls and parking are added on top before splitting.
What mileage should I use?
Use your real-world highway figure, not the ARAI/company-claimed figure, which is measured in ideal conditions. City driving and air-conditioning usually lower mileage by 10–25%.
Are fuel prices built in?
No — prices change daily and differ by city, so enter the current rate from your fuel station or oil company app.
How do I split the trip cost among friends?
Enter the number of people travelling. The calculator adds tolls and parking to the fuel cost and shows each person’s share.
How much petrol will a 300 km trip need?
At 15 km per litre, a 300 km trip needs 20 litres. Multiply by the current price in your city for the cost.
Can I use it for a CNG car?
Yes. Enter mileage in km per kg and the CNG price per kg.
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