Six small calculators for the questions pilots ask before take-off, from the wind check to planning a mapping flight. They run in your browser, need no account and send nothing anywhere. Each page explains the formula it uses, with a worked example, so you can check the numbers yourself.
Drone wind calculator
Check the wind and gusts against your drone's maximum wind resistance. Pick your model from 77 drones or type its limit, and see OK, caution or no-go with the same rules as the app.
Wind at altitude calculator
Estimate the wind at 30, 50, 80, 100 and 120 m from the 10 m forecast, for open sea, open country, towns and calm nights, and compare it with your drone's wind limit.
Wind speed converter and Beaufort scale
Convert wind speed between km/h, m/s, mph and knots and see the Beaufort force, with a Beaufort table that says what each force means for a drone.
Return-to-home calculator with headwind
Work out how long your drone takes to fly home against the wind, how much battery is left when it lands and the farthest point you can turn back from.
Golden hour and blue hour calculator
Find the golden hour, blue hour, sunrise, sunset and solar noon for any place and date, to plan drone photos and videos in the best light.
GSD and overlap calculator for drone mapping
Work out the ground sampling distance (cm per pixel), the photo footprint, the spacing between photos and flight lines and the shutter interval for a mapping flight.
The wind limits in the drone picker come from the same list the app uses; the full table is in the drone wind limits chart.