Fuel Cost Calculator
Estimate fuel costs for any trip before you commit. Enter distance, MPG, and fuel price to see total gallons needed, total cost, and per-mile fuel expense.
Fuel: Your Biggest Variable Cost on Every Load
Fuel is the single largest variable expense for most owner-operators, typically accounting for 30–40% of total operating costs. At current diesel prices around $3.80/gallon and an average of 6.0 MPG loaded, that works out to roughly $0.63 per mile just in fuel. On a 1,000-mile haul, you're burning through $630 before you account for anything else. Knowing this number before you accept a load is the difference between making money and donating your time.
Your actual MPG depends on several factors: equipment type (reefers with the unit running drop to 4.5–5.5 MPG), load weight, terrain, speed, tire pressure, and idle time. A semi idling for 8 hours burns roughly $6–$8 in diesel. Over a month, that adds $150–$200 in pure waste. This calculator lets you plug in your real MPG and local fuel price to see exact costs for any trip distance, so you can evaluate whether the load rate actually covers your fuel and leaves room for profit.
For a complete picture of how fuel fits into your overall operating expenses, run your numbers through our cost per mile calculator next. Together, these tools give you the data you need to set a minimum rate and stop leaving money on the table.
Trip Details
Typical MPG by Equipment
Frequently Asked Questions
Average MPG varies by equipment type and load status. Loaded dry vans typically get 5.5-6.5 MPG, reefers with the unit running 4.5-5.5 MPG, flatbeds 5.0-6.0 MPG, and hotshots 8.0-12.0 MPG. Running empty (bobtail) improves fuel economy to 8-10 MPG. Use your actual fuel receipts and odometer readings for the most accurate number.
Key fuel-saving strategies include maintaining proper tire pressure (underinflation costs 0.3% per PSI), keeping speed at 62-65 MPH (every MPH over 55 reduces MPG by 0.1), using cruise control on highways, reducing idle time, keeping up with engine maintenance, and planning efficient routes that minimize empty miles.
At current diesel prices around $3.80/gallon and 6.0 MPG average, fuel costs approximately $0.63 per mile. This is typically the largest single variable cost for owner-operators, representing 30-40% of total operating expenses. Use this calculator with your actual MPG and local fuel prices for a precise number.
Yes, for trucks with SCR (selective catalytic reduction) systems — which includes most trucks manufactured after 2010. DEF consumption is typically 2-3% of diesel consumption. At roughly $3-4 per gallon, DEF adds approximately $0.01-0.02 per mile to your operating costs.
Absolutely. A semi truck burns approximately 0.8-1.0 gallons per hour while idling. Over an 8-hour rest period, that's $6-8 in fuel. Many carriers idle 6-8 hours per day, which can add $150-200+ per month to fuel costs. Investing in an APU (auxiliary power unit) can eliminate most idling fuel waste.
We Factor Fuel Into Every Load Decision
Our dispatchers calculate fuel costs, deadhead expenses, and net revenue for every load before presenting it to you. No surprises — just profitable miles.