💵 Fuel Cost Calculator
Turn distance, MPG, and diesel price into cost per trip, per month, and per year — then switch on fleet mode to see the total across every truck you run.
💵 Per truck
A general estimate based on a steady average. Actual spend varies with load, idling, deadhead miles, terrain, and pump prices — verify against your own fuel records and routing.
Small numbers, big fleet totals
A dime on the price of diesel or half a mile per gallon looks trivial per trip and becomes a serious sum once it is multiplied by monthly trips and a yard full of trucks. Seeing the annual and fleet totals side by side is what turns fuel from a fixed cost into a lever you can pull.
Combine it with the MPG calculator to test what better economy is worth, and with the maintenance scheduler to keep engines running at their most efficient.
❓ Frequently Asked Questions
How is trip fuel cost calculated?
Cost per trip = (distance ÷ MPG) × price per gallon. A 500-mile run at 6.5 MPG burns about 76.9 gallons; at $4.00/gal that is roughly $307.69. Multiply by trips per month and then by twelve for the monthly and annual totals.
What MPG should I use for a diesel truck?
Loaded heavy-duty tractors commonly run 6–8 MPG, vocational and mixer trucks often less, and lighter medium-duty trucks more. Use your own tracked average from the MPG calculator for the most accurate result rather than a brochure figure.
How does fleet mode work?
Enter the number of trucks and the tool multiplies the per-truck trip, monthly, and annual costs across the whole fleet, assuming similar duty. It is a quick way to see how a change in fuel price or economy scales across your operation.
How accurate is the annual figure?
It is a general estimate built from a steady average. Real spend swings with load, idling, deadhead miles, terrain, seasonal pricing, and route mix — verify against your own fuel records and treat the annual number as a planning baseline, not a guarantee.