Estimates use momentum theory for props (figure of merit 0.6) and 80 % motor-ESC efficiency. Real numbers depend on your motors and wind.
Questions
How long will my quadcopter fly?
Enter its flying weight, props and battery. The tool works out hover power from the prop size and gives hover time and a realistic flight time for your flying style.
How is fixed-wing flight time worked out?
Cruise power = weight × speed ÷ glide ratio, divided by prop and motor efficiency. Usable battery energy divided by that power gives endurance.
How does the VTOL calculator work?
It takes hover power for take-off and landing out of the battery first, then uses the rest for cruise. It also warns you if hover current is too high for Li-ion cells.
Keep designing
CG calculator
Balance point, neutral point and static margin for any RC plane, with a 3-view drawing and a battery-position helper.
Open tool →Wing loading calculator
Wing loading, stall and landing speed, and whether your weight is normal for your build.
Open tool →Battery pack calculator
Voltage, capacity, energy, weight and safe current for any S and P pack.
Open tool →