Estimate fuel remaining after a flight using fuel on board, fuel burn, and flight time. This free aviation calculator helps pilots track fuel use and improve fuel planning awareness.
Enter fuel on board, fuel burn, and flight time to estimate fuel used, fuel remaining, and endurance remaining.
This calculator provides a planning estimate. Actual fuel remaining depends on real-world fuel burn, power setting, mixture, altitude, and operating conditions.
A fuel remaining calculator estimates how much usable fuel is left after a given amount of flight time. It uses fuel on board, fuel burn, and time to estimate fuel used and remaining endurance.
This is useful for preflight planning, in-flight fuel awareness, and training. It can also help pilots compare planned burn against expected remaining fuel.
Use a realistic average fuel burn for the phase of flight you are planning, based on power setting, mixture, altitude, and expected conditions.
Yes. Real-world fuel burn can vary because of winds, power changes, altitude, configuration, leaning, and aircraft condition.
No. This calculator is a planning aid. Pilots should always verify fuel status using approved aircraft procedures, gauges, fuel totalizers when installed, and actual operational judgment.
Endurance remaining is the amount of time the aircraft could continue to fly at the current fuel burn rate with the estimated fuel remaining.