🌀 Wind Window Calculator
Slide through the wind window from the deep power zone to the neutral edge and watch the relative pull change — a simple, visual way to learn where a kite makes its power.
🌀 Where you are in the wind window
Straight downwind, the kite generates its maximum pull — great for a strong start or a boost, but the most demanding to control.
Simplified model: relative power ≈ cos(angle), 100% straight downwind falling to 0% at the edge. Real kites lose power faster near the edge because pull depends on the square of the apparent wind — treat this as an illustration.
Kiteboarding is a wind sport with real risks — get proper instruction; these are general educational estimates.
Learn to fly the whole window
Good kite control is really window control: keep the kite near the edge to move gently, dip it into the power zone for a burst, and park it neutral to rest. Feeling where power lives — and how quickly it builds toward the centre — is the foundation every instructor teaches first.
Combine this with the line-tension calculator to connect “deep in the power zone” to an actual pull in kilograms, and with the Wind Speed Converter to gauge the day's conditions.
❓ Frequently Asked Questions
What is the wind window?
The wind window is the roughly quarter-sphere of sky downwind of you where a kite can fly. Its centre — straight downwind — is the power zone, where the kite pulls hardest. Its outer edge, about 90° from straight downwind (directly overhead and out to the sides), is the neutral zone, where the kite sits with almost no pull.
What do the zones mean?
Working out from the centre: the power zone (about 0–30° from straight downwind) gives maximum pull; the intermediate zone (about 30–60°) gives moderate, controllable power; the edge zone (about 60–85°) gives light pull for positioning; and the neutral zone (about 85–90°) is where you park the kite with minimal pull.
How is relative power calculated?
This tool uses the simplified model power ∝ cos(angle from straight downwind): 100% at 0° (straight downwind), about 71% at 45°, 50% at 60°, and 0% at the 90° edge. It is deliberately simple and illustrative — real kites lose power faster near the edge because pull depends on the square of the apparent wind.
Is this a training substitute?
No. It is an educational illustration of how power varies across the window, not lessons. Kiteboarding is a wind sport with real risks — get proper hands-on instruction before you ride; these are general estimates.