Fuel Cost Per Trip
Calculator
Results
- Fuel used (L)
- 30.6
- Trip fuel cost
- 53.55
- Cost per km
- 0.119
- Cost per 100 km
- 11.9
Results
| Fuel used (L) | 30.6 |
| Trip fuel cost | 53.55 |
| Cost per km | 0.119 |
| Cost per 100 km | 11.9 |
formula-map diagram
- Fuel used (L)
- 30.6
- Trip fuel cost
- 53.55
- Cost per km
- 0.119
- Cost per 100 km
- 11.9
Formula breakdown
Formula
Cost = distance ÷ 100 × L/100 km × price per litre= 30.6
Note
Simplified model: results use idealised textbook relationships and ignore real-world factors such as driving style, load, temperature, aerodynamic and rolling losses, drivetrain efficiency, tyre and brake condition and road surface. CO2 figures are tailpipe only, based on the standard 2.31 kg CO2 per litre of petrol (2.68 kg per litre of diesel), and exclude fuel production and distribution. Use them as estimates, not as legal, safety or load-rating figures.
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See all →Frequently asked questions
What does this calculator need to estimate the cost of a specific trip?+
It needs the trip distance, your vehicle's fuel consumption rate (MPG or L/100km), and the current price of fuel per gallon or liter. From these it derives the fuel quantity needed for the distance, then multiplies by price to get total cost.
How is total trip fuel cost calculated from consumption and distance?+
Using L/100km: cost = (distance ÷ 100) × L/100km rate × price per liter. Using MPG: cost = (distance ÷ MPG) × price per gallon. Both approaches convert distance into fuel quantity first, then apply the price.
Why might the actual cost of a trip differ from this estimate?+
Real-world fuel consumption varies with terrain (hills increase consumption), traffic and idling, load and passengers, air conditioning use, and driving style, all of which can push actual consumption above or below the rated or average figure used in the estimate.
What's a common misconception about round-trip fuel cost?+
Assuming a round trip simply doubles the one-way cost, when in fact different conditions in each direction — such as a net elevation change, different traffic patterns, or wind resistance from vehicle speed — can make outbound and return consumption meaningfully different.
Should this calculator's estimate include tolls or other trip costs?+
No — it calculates fuel cost only, based on distance and consumption rate. Tolls, parking, and other trip expenses are separate costs that need to be added manually if you want a total cost-of-trip figure rather than just the fuel portion.