Fuel Cost Calculator
Calculate driving fuel expenses, cost per kilometer, and shared carpool fares for Petrol, Diesel, CNG, and Electric Vehicles (EV). Instant 0ms in-browser calculation.
Trip & Vehicle Parameters
₹1,628.8
250 km total journey₹6.52 / km
Direct fuel economyJourney & Consumption Metrics
Frequently Asked Questions
How is total fuel cost calculated for a road trip?
Total fuel required is calculated by dividing the total trip distance (in km) by your vehicle's average mileage (km/liter or km/kg). Total cost is then obtained by multiplying the required fuel quantity by the current local price per liter or kg.
Are fuel prices hard-coded in this calculator?
No. While representative average Indian fuel rates are provided as convenient defaults (e.g., Petrol ~₹104, Diesel ~₹92, CNG ~₹82), the price field is 100% editable so you can input the exact pump rate for your city.
How does EV cost calculation differ from petrol/diesel vehicles?
For Electric Vehicles (EV), mileage is measured in kilometers per kilowatt-hour (km/kWh), and the fuel price represents the domestic or commercial charging tariff per unit (₹/kWh). EVs typically exhibit significantly lower running costs per km (around ₹1.2 - ₹1.5/km) compared to internal combustion engines.
Road Trip Fuel Cost & Carpool Mathematics Explained
Accurate formulas to estimate trip fuel consumption, cost per kilometer, and fair shared passenger splits across Petrol, Diesel, CNG, and EV.
The Road Trip Fuel Math
Estimating driving fuel expense requires three primary physical variables:
Fuel Liters = Total Distance (km) ÷ Vehicle Mileage (km/l)
Total Fuel Cost = Fuel Liters × Price Per Liter (₹)
Cost Per Kilometer = Total Fuel Cost ÷ Total Distance (km)
Per Person Fare = (Fuel Cost + Tolls) ÷ Passenger Count
Worked Case Study: Mumbai to Goa (600 km)
Driving a Petrol hatchback (15 km/l) with 4 friends at ₹105/liter and ₹850 highway toll plaza fees:
Fuel Economy Comparison: Petrol vs Diesel vs CNG vs EV
Running costs vary substantially across Indian power-trains: (1) Petrol averages ₹6.50 to ₹8.00 per km; (2) Diesel delivers higher highway fuel efficiency, averaging ₹5.00 to ₹6.20 per km; (3) Factory CNG delivers 25+ km/kg, yielding a low ₹3.00 to ₹3.80 per km; and (4) Electric Vehicles (EV) consuming 12–15 kWh per 100 km at domestic power rates deliver unmatched economy of just ₹1.20 to ₹1.80 per km.
Air Conditioning Impact: Continuous AC usage in peak Indian summers reduces internal combustion vehicle mileage by approximately 8% to 15%, and electric vehicle range by 10% to 20%.
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