Inputs
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Isolate the fuel consumed by loaded travel, the empty return, and loading or waiting idle time. Use the result as one input in a complete hauling-cost estimate.
Fuel gallons = loaded miles ÷ loaded MPG + empty miles ÷ empty MPG + idle hours × idle gallons per hour. Fuel budget = gallons × diesel price × (1 + reserve percentage).
A round-trip mileage total multiplied by one average MPG can hide the effect of a loaded outbound leg, an empty return, and waiting at the yard or site. This calculator shows those components separately so you can compare the estimate with fuel receipts and trip records later.
Fuel is only one part of transport cost. Send the fuel result to the Trailer Hauling Cost Calculator, which adds nonfuel truck and trailer cost, paid time, direct fees, and overhead.
Two hauls with 30 loaded miles and 30 empty miles each create 120 route miles. At 7 loaded mpg and 10 empty mpg, driving uses about 14.57 gallons. One total idle hour at 0.8 gallon per hour raises the estimate to about 15.37 gallons. At $5.25 per gallon, base fuel cost is about $80.70; a 10% reserve creates a fuel budget of about $88.76.
The U.S. Energy Information Administration publishes weekly on-highway diesel prices for the United States and petroleum regions, including taxes. Use that series as a current check, then prefer the price actually available to your operation.
DOE's Alternative Fuels Data Center planning methodology includes fallback assumptions of 6 mpg for a heavy-duty truck over 26,000 pounds and 0.8 gallon per hour for heavy-duty diesel idling. Those are planning values, not guarantees. Actual consumption changes with engine, trailer, payload, speed, terrain, traffic, temperature, wind, idle policy, and maintenance.
This tool creates a transparent fuel budget, not an industry-standard surcharge. If a contract uses a surcharge, define the baseline price, index, adjustment interval, calculation, and cap in writing.
No. It is a planning allowance for uncertainty. The mobilization calculator separately applies customer margin after supported cost is assembled.
No. Add diesel exhaust fluid and other consumables to direct transport cost or the nonfuel cost-per-mile input when material.