Fuel Cost Impact Calculator - MPG, Surcharge & Net Fuel Cost
See how fuel changes your real load economics and cost per mile.
How This Calculator Helps
This calculator shows how diesel price, MPG, trip miles, and surcharge revenue affect net fuel cost and fuel share of revenue.
Use it before accepting longer trips, comparing one-way versus round-trip cost, or checking whether fuel is eating too much of the load.
How to Use This Calculator
- Enter trip miles and choose one-way or round-trip.
- Add truck MPG and current diesel price.
- Enter surcharge revenue and trip revenue if known.
- Watch fuel cost per mile and fuel percentage of revenue.
FAQ
What costs are most sensitive to fuel changes?
Fuel usually has the biggest short-term swing and can quickly change trip-level profit, especially when rates are flat.
How is net fuel cost calculated?
The calculator estimates fuel spend from miles, MPG, and diesel price, then subtracts surcharge revenue to show net fuel burden.
Should I use one-way or round-trip?
Use round-trip when you may reposition empty or take low-paying backhaul so your cost per mile is not understated.
What fuel share is usually risky?
When fuel climbs above roughly 35-40% of revenue, margins can get thin unless rate or surcharge support is strong.
How often should I update fuel assumptions?
Update at least weekly, and more often during volatile diesel pricing periods.