Fuel Cost Calculator
Work out exactly how much a trip will cost in fuel, split per person, from your distance, vehicle efficiency and local fuel price.
Disclaimer. This calculator gives an estimate based on the distance and efficiency figures you enter — actual fuel consumption varies with driving style, traffic, terrain, vehicle load and tyre condition, so treat the result as a planning guide, for estimation purposes only. Read full disclaimer →
How Fuel Cost Is Calculated
The calculator first normalises your inputs to a common basis: distance is converted to kilometres (miles × 1.60934), and fuel efficiency — however you enter it — is converted to litres per 100km. If you enter km/L, it converts as 100 ÷ km/L; if you enter MPG, it converts using 235.214 ÷ MPG (the standard imperial-gallon conversion factor).
Formula: Litres Used = Distance(km) × (Litres/100km) ÷ 100, then Total Cost = Litres Used × Price per Litre. The tool also shows cost per kilometre, cost split evenly per passenger, and an automatic round-trip figure (2× the one-way cost) for quick trip budgeting.
Worked Example
A 500km trip in a car doing 15 km/L, fuel at ₹100/litre, with 4 passengers: fuel consumption = 100 ÷ 15 = 6.67 L/100km, litres used = 500 × 6.67 ÷ 100 = 33.33 L, total cost = ₹3,333.33 (₹833.33 per person, ₹6.67/km), or ₹6,666.67 for a round trip.