Cost per hour and per trip
cost per hour = fuel flow (gal/h) × price ($/gal)
trip cost = cost per hour × time = gallons × price
If you enter flow in pounds per hour, gallons per hour are obtained with the selected fuel density: 6.0 lb/US gal for 100LL, 6.7 for Jet-A, and 6.4 for Jet-B, matching the fuel weight calculator. You can also type a known gallon quantity and skip the flow, or add oil in quarts per hour.
What this is not
A wet rental rate already includes fuel; do not add this cost on top of a wet Hobbs price. For a full ownership or rental picture, use the rental cost and ownership cost calculators. For reserves and endurance, use the fuel planner.
Sources
Typical 100LL and Jet-A densities as used in FAA-H-8083-25 PHAK and on this site’s fuel-weight page; time–fuel arithmetic as in the fuel planner. Enter the price you were actually quoted.
Frequently asked questions
Does this use a current 100LL or Jet-A price?
No. Fuel prices change by airport and by day. Type the price you were quoted, or a planning figure you are comfortable with. The $6.50 and $5.00 buttons are only examples.
How do I enter a jet fuel flow in pounds per hour?
Choose Jet-A (or Jet-B), switch the flow unit to lb/h, and enter the pph. The page divides by 6.7 lb/gal (Jet-A) to get gallons, then multiplies by your price per gallon.
Should I use this with a wet rental rate?
Usually not. A wet rate already includes fuel. Use this page for a dry rate, an owned airplane, or to see what the fuel share of a trip actually is. The rental cost calculator handles wet versus dry Hobbs.