Round-trip and road buffer
Model the return journey plus extra fuel for traffic or weather.
FuelTrip • Trip cost estimate
⌁Fuel Cost Calculator for a Trip
Estimate fuel use, total trip cost and cost per passenger before you drive.
Top toolThree ways it saves you time
Carbon estimate
See an approximate CO₂ footprint alongside fuel and price.
Per-passenger cost
Include tolls and divide the realistic trip total across the group.
Buffered trip estimate
41.07320 total distance11.7 fuel units20.53 per passenger
Estimated fuel CO₂104.3 kg
Using this tool
Use total distance and real efficiency
Enter the trip distance, your vehicle’s fuel efficiency and the current fuel price. Add tolls and passenger count to estimate both the full journey and each person’s share.
Reading the output
Road conditions change the estimate
A 300 km journey
A 300 km trip in a car using 7.5 L/100 km needs about 22.5 litres. At $1.20 per litre, fuel costs $27 before tolls.
Metric and imperial formulas
Metric fuel used = distance × L/100 km ÷ 100. Imperial fuel used = miles ÷ MPG. Total cost = fuel used × price + tolls.
Use recent vehicle data
- Use your real recent efficiency rather than the manufacturer’s best-case figure.
- Include the return distance if the field contains one-way distance.
- Heavy traffic, speed, weather and cargo can increase consumption.
Before relying on the result
Distance and consumption questions
Should I enter one-way or round-trip distance?
Enter the total distance you expect to drive. Double a one-way distance for a return trip.
Why might the real cost differ?
Traffic, driving style, vehicle load, weather and changing fuel prices all affect the final amount.