Fuel Cost Calculator
Estimate how much fuel you'll need and what it will cost for any trip, based on distance, your vehicle's fuel efficiency, and the current fuel price.
Estimated trip fuel cost
$37.50
What Your Result Means
Fuel needed shows how many gallons (or liters) your trip will require. Trip fuel cost multiplies that by your entered fuel price for a total dollar estimate - handy for budgeting road trips or comparing vehicles.
How It Is Calculated
Imperial: Fuel Needed = Distance / MPG
Metric: Fuel Needed = (Distance / 100) × L/100km
Worked Example
A 300-mile trip in a car that gets 28 MPG, with gas at $3.50/gallon, needs about 10.7 gallons of fuel, costing roughly $37.50.
Important Assumptions
- Assumes steady, average fuel efficiency - actual mileage varies with driving conditions, speed, and load.
- Does not include tolls or other trip costs beyond fuel.
Frequently Asked Questions
- Where do I find my car's MPG?
- Check your vehicle's manual, the window sticker (for new cars), or calculate it yourself by dividing miles driven by gallons used over a few fill-ups.
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Methodology
This calculator uses standard fuel efficiency math for both imperial and metric units. See our methodology page for details.
This calculator provides estimates for general informational purposes only and should not be relied upon as the sole basis for any decision.