Trip Fuel Cost Calculator: Petrol or Diesel Cost for a Road Trip
Free tool · Updated October 2, 2026 · By CouponTalk
Your result
Enter your measurements to see your result.
Quick answer
Trip fuel cost = distance ÷ mileage × fuel price. A 500 km one-way trip in a car that gives 15 km per litre uses 33.3 litres, which costs ₹3,333 at ₹100 a litre. Add ₹600 of tolls and the trip costs ₹3,933, or ₹983 each for four people. Highway mileage is usually 10–20% better than city mileage.
How to use this calculator
- Get the distance from Google Maps.
- Use your car's real highway mileage, not the claimed figure.
- Enter today's fuel price in your city and the tolls shown on the route.
Formula
Fuel used (litres) = distance ÷ mileage
Fuel cost = litres × price per litre
Trip cost = fuel cost + tolls; per person = trip cost ÷ people
Fuel prices change daily, and real mileage depends on traffic, AC use and load.
Frequently asked questions
How do I find tolls on my route?
Google Maps shows estimated toll costs for many Indian routes. FASTag users pay the same rates.
Does AC reduce car mileage?
Yes, by about 5–10% on highways and more in city traffic.
Is diesel or CNG cheaper for long trips?
Enter each car's mileage and fuel price to compare. Use kg for CNG: km per kg and price per kg.
Related calculators
Mileage Calculator (km/l)Real km/l and cost per km
Child Car Seat Size CalculatorHeight + weight to seat type
Helmet Size CalculatorHead size to XS–XXL helmet
EV vs Petrol Cost CalculatorMonthly saving & payback
See all tools & calculators → · Read Car Accessories buying guides →
Latest Car Accessories guides
View all blogs →
Car Accessories
10 Best Car Bass Tube Brands In India
Car Accessories
10 Best Air Conditioner Brands In India
Car Accessories
10 Best Car Body Cover Brands In India
Car Accessories
10 Best Car Floor Mat Brands In India
Car Accessories
10 Best Car Seat Cover Brands In India
Car Accessories
8 Best Alloy Wheel Brands In India
