Truck Driver Fuel Reserve Calculator
Estimate how much fuel money to reserve for a trip so unexpected detours, traffic, weather, and fuel-price changes do not catch you short.
Enter trip details to begin.
This is a planning estimate. Actual fuel use changes with load, terrain, weather, idling, and traffic.
How to use the Fuel Reserve Calculator
Enter your planned miles, average miles per gallon, current fuel price, and the reserve percentage you want to keep available. The result includes the added reserve above your base fuel estimate.
Fuel reserve calculator FAQ
What reserve percentage should I use?
Many drivers use a personal cushion such as 10% to 20%, depending on the route and how predictable fuel stops are.
Does the result include DEF?
No. DEF is not included. Add it separately to your trip budget if needed.
Why is my actual fuel use higher?
Heavy loads, hills, idling, wind, traffic, and cold weather can all reduce fuel economy.