Mileage Calculator
Your vehicle's real mileage in km/l and l/100 km, and the fuel cost per kilometre.
Result
How to use
- 1
Fill the tank to full and note the odometer reading.
- 2
Drive normally; at the next fill, fill to full again and note the litres and the new reading.
- 3
Enter both readings and the litres to see your real mileage.
Questions
What is the tank-to-tank method?
Fill the tank to the brim and note the odometer. Next time, fill to the brim again — the litres needed equal the fuel used for the distance travelled. It is the most accurate way to measure real mileage.
What is l/100 km?
Litres used to travel 100 km — a lower number is better. It equals 100 ÷ km per litre, so 15 km/l is about 6.67 l/100 km.
Why is my mileage lower than the claimed figure?
Company (ARAI) figures are measured in controlled tests. City traffic, AC use, tyre pressure, load and driving style all lower real-world mileage.
About this Mileage tool
Mileage Calculator — Your vehicle's real mileage in km/l and l/100 km, and the fuel cost per kilometre. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Fill the tank to full and note the odometer reading.
Related reading
Articles that go with this tool
Road-Trip Safety Checklist: Before You Start, On the Highway, and at Night
A family road trip is fun only when everyone gets home safe. A practical checklist for the car, the driver, the documents and the highway — including ghat roads, rain and night driving.
One Phone-Free Sunday: What a Day Without Scrolling Taught Me
I switched off my phone for one full Sunday. The first hour was hard, the rest of the day was the calmest I’d had in months. Here’s what happened, and how you can try it too.
Kids and Screens: A Practical Guide to Healthy Screen Time for Indian Families
Phones keep kids quiet — but at what cost? What WHO recommends for young children, warning signs to watch, and simple family rules that actually work.
Related tools
More everyday tools you may like
Results are estimates to help you plan. They are not financial, tax or medical advice.