Fuel Cost Calculator
Calculate the fuel cost for any trip based on distance, fuel efficiency, and current fuel prices.
Fuel Needed
20.00 L
Total Cost
₹1,894.40
Cost per km
₹6.31
Efficiency reference: 15.0 km/L = 6.7 L/100km
About the Fuel Cost Calculator
India's fuel prices are among the most volatile in Asia, with petrol and diesel prices revised regularly by oil marketing companies. For regular commuters and long-distance drivers, calculating fuel cost per kilometer helps in budgeting, comparing vehicles, and making EV vs ICE decisions. The calculation is simple but the inputs - actual fuel efficiency (not ARAI-claimed) and real-world fuel prices - make all the difference.
Fuel Cost Calculation
Fuel needed = Distance / Fuel efficiency (km/L) · Fuel cost = Fuel needed × Price per liter
Cost per km = Fuel price / Fuel efficiency · For EVs: Cost per km = Electricity rate (₹/kWh) × Consumption (kWh/100km) / 100 · Real-world efficiency is typically 10-25% lower than ARAI-claimed figures
Worked Example
Monthly commute 1,200 km at 14 km/L petrol car, petrol at ₹104/litre
Fuel needed = 85.7 litres · Monthly fuel cost = ₹8,913 · Cost per km = ₹7.43
Tips & Insights
- 1
Real-world fuel efficiency in city driving is typically 15-25% below ARAI-claimed figures - use your actual average from the trip meter.
- 2
Tyre pressure at the recommended level improves fuel efficiency by 2-3% and extends tyre life - check monthly.
- 3
For EV vs petrol comparison: at ₹104/L petrol and ₹7/kWh electricity, EVs cost 4-5x less per km for typical consumption figures.
- 4
Highway driving at 80-90 km/h is 20-30% more fuel-efficient than city stop-and-go traffic.
Why this matters for you
Fuel is the single largest variable expense for many Indian households that own vehicles. Understanding cost per km makes the true cost of car ownership visible and enables rational decisions about commute vs WFH, bike vs car for short trips, and petrol vs CNG vs EV tradeoffs. These calculations can save ₹15,000-₹40,000 per year for high-mileage drivers.
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