The fin limits the sail size.
The FSC calculates the maximum sail size depending on the altitude, the air temperature & humidity of a windsurf spot, For the current location, the app can query those data itself (preview).
NEW. This orientation aid can be optionally extended with the corresponding wind speed (on a trial basis). If you want to display it, it is enough to enter the windsurfers' weight.
> Disclaimer. Windsurfing can be a dangerous sport. I am not responsible for any damage or injury resulting from the use of this website and/or the Fin to Sail Size Calculator (abbreviated FSC).
By using the FSC you agree to the disclaimer.