MPG Calculator
Use your miles per gallon and pump price to estimate fuel cost for the road ahead.
Enter the miles you drove and the gallons it took to refill.
You can’t out-drive a diesel spike. Hedjee pays the difference.
Pick the gallons you want protected and pay a small fee on each. If diesel jumps, Hedjee pays you the difference. No margin account, no cash deposit.
Or get one email when diesel crosses a price you pick.
Gulf Coast official weekly price on Sep 28, 2026: $5.754
FAQ
How do I measure my MPG from a fill-up?
Fill up, note the odometer, drive, then fill up again. Miles driven divided by the gallons pumped at the second fill-up is your MPG. Average a few fill-ups for a steadier number.
How is the idling cost worked out?
Idle hours a week times gallons burned per hour, times the diesel price. The 0.8 gallons an hour default comes from Argonne National Laboratory’s idle-reduction research for a typical heavy-duty truck. Use your own rate if you know it.
Which diesel price is used?
The latest U.S. average diesel price published each week by the U.S. Energy Information Administration, with its date. Replace it with the price you pay.
Are my numbers stored anywhere?
Only in your browser, and only if you leave “remember my inputs” checked. Your MPG and diesel price fill in the cost per mile and load profit tools on this device for 30 days and are never sent to Hedjee.