Preflight calculations, fast and accurate
Enter a runway and the wind to see the crosswind and headwind components instantly. Check the results against your POH/AFM.
All tools
Crosswind Calculator横風計算
Crosswind and headwind components from runway and wind. Handles gusts, true-to-magnetic conversion of METAR winds, and comparison with the opposite runway.
Aircraft Performance機体別性能計算Coming soon
Takeoff and landing distances for common trainers such as the C172. We will publish once POH figures and permission to use them are confirmed.
Density Altitude密度高度Coming soon
Density altitude from pressure altitude and temperature.