Fuel Cost Calculator
Calculate the fuel cost for any trip. Enter distance, fuel efficiency, and price per litre or gallon. Supports km/L, L/100km, and MPG.
Trip Details
Total Fuel Cost
10.00
for 100 km
Fuel Used
6.67 L
litres consumed
Cost / 100 km
10.00
per 100 km
Cost / Person
10.00
split 1 way
How to calculate fuel cost with Fuel Cost Calculator
Estimate the petrol or diesel cost for any journey in seconds. Supports km/L, L/100km, and MPG.
- 01
Enter the trip distance
Type the total distance of your journey in kilometres or miles. For a round trip, enter the one-way distance and enable the round-trip toggle.
- 02
Set your fuel efficiency
Enter your vehicle's fuel consumption in your preferred unit: km/L, L/100km, or MPG (US or UK). You can usually find this figure in your car's manual or on the manufacturer's website.
- 03
Enter the fuel price
Input the current price per litre or gallon at your local petrol station. The tool supports any currency. Just enter the number and it calculates accordingly.
- 04
See your total fuel cost
The calculator instantly shows the total fuel cost, litres or gallons needed, and cost per kilometre or mile so you can compare routes or vehicles.
What people use it for
From weekend road trips to daily commutes, knowing your fuel cost upfront helps you plan and budget smarter.
Road trip budgeting
Estimate the total fuel cost for a long drive before you leave, so you can budget accurately and avoid surprises at the pump.
Comparing vehicles
Enter the fuel efficiency of two different cars to see exactly how much you'd save on a given route by choosing the more economical option.
Daily commute costs
Calculate your weekly or monthly fuel spend for your regular commute to understand the true cost of driving versus public transport.
Freight and delivery planning
Fleet managers and couriers can estimate fuel costs per route to price deliveries accurately and track operating expenses.
Carpooling cost splitting
Work out the total fuel cost for a shared journey and divide it fairly among passengers based on distance travelled.
Travel expense reporting
Calculate fuel costs for business trips to include in expense reports, alongside mileage reimbursement calculations.
Worked example: a 450 km road trip
Say a car does 15 km per litre and petrol costs ₹103 a litre. A 450 km trip uses 450 ÷ 15 = 30 litres, which costs 30 × ₹103 = ₹3,090. Split between 4 people, that's ₹772.50 each. Remember to double the distance for a return trip.
The calculator accepts km/L, L/100km or US MPG. Internally it converts everything to litres per 100 km: 15 km/L is 6.67 L/100km, and 15 MPG is 15.68 L/100km. If you know only your car's claimed mileage, expect real-world figures to be lower, especially in city traffic or with the AC on.
| Efficiency | Fuel for 450 km | Cost at ₹103/L |
|---|---|---|
| 10 km/L | 45 L | ₹4,635 |
| 15 km/L | 30 L | ₹3,090 |
| 20 km/L | 22.5 L | ₹2,318 |
| 25 km/L | 18 L | ₹1,854 |
What the estimate doesn't include
- Tolls, parking and wear on the car, which can add a lot on highway trips.
- Changes in efficiency with speed, load and hills. A fully loaded car at highway speed can use noticeably more fuel than its rated figure.
- Electric and CNG vehicles, which use kWh or kg rather than litres. For an EV, divide distance by km per kWh and multiply by your electricity rate instead.
Frequently asked questions
Everything you need to know about calculating fuel costs for any trip or vehicle.