Calculate true wind direction and speed for sailing. Input vessel speed, apparent wind, and angle to determine accurate wind data.
3.1
July 1, 2026
v3.1 — Pro performance tools for serious sailors. • New: VMG and target boat speed, calculated against your polar curve (Pro) • New: tack & layline tactics — know exactly when to tack and whether you can lay the mark (Pro) • Pro remains a one-time unlock — no subscription, ever.
More$4.99
Pro Unlock
Unlock all Pro features. One-time purchase.
Hi, have you checked the new version? It does much more. Hope it helps you.
True-Wind Calculator helps you determine the true wind direction and speed. It uses your vessel's speed, the apparent wind speed and angle, and your vessel's heading as inputs.
True-Wind Calculator is a paid app, available for $1.99. This one-time purchase grants you access to all its features.
True-Wind Calculator is compatible with iPhone, iPad, and iPod devices. It is designed for iOS users.
The latest version of True-Wind Calculator, version 2.2, was released on November 3, 2022. This indicates regular updates to maintain functionality.
True-Wind Calculator has an age rating of 4+. This means it is suitable for users of all ages, with no content restrictions.
No, True-Wind Calculator does not contain advertisements. As a paid application, it offers an ad-free experience.
While the app provides precise calculations, its utility is best for those familiar with sailing terminology and data inputs like vessel heading and apparent wind.