Fuel Cost Calculator
Estimate trip fuel use and cost in US or metric units.
Estimated fuel cost
$14.00
- Total distance
- 100 miles
- Fuel required
- 4 gallons
- Cost per distance unit
- $0.14
This estimate excludes changing traffic, terrain, driving style, idling, and fuel prices.
What this calculator does
Calculate fuel cost from distance, efficiency or consumption, price, trips, and return travel.
Inputs and what they mean
- Units
- — choice value.
- One-way distance
- — number value.
- Fuel efficiency
- — number value.
- Fuel price
- — number value.
- Trips
- — number value.
- Include return journey
- — yes/no value.
How to use it
- Enter the requested values.
- Adjust optional assumptions for your situation.
- Review the result and detailed breakdown.
Formula
US: fuel = distance ÷ MPG. Metric: fuel = distance × L/100 km ÷ 100. Cost = fuel × price × trips, doubled for a return journey.
Worked example
100-mile trip at 25 MPG
At $3.50 per gallon, estimated fuel cost is $14.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
Results depend entirely on the figures you enter and are rounded for display. They are for general information and education, not professional advice.
Common questions
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