Source-backed sizing for kite, wing, foil, surf, SUP, windsurf and more. No guesswork, no paywalls.
Join the list for the Complete Waterman Gear Guide — one sizing cheatsheet per discipline.
Best for learning and low-drag setups
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All 12 disciplines, live from your current inputs. Tap a card to expand.
How to read these numbers — and what they can't tell you.
Volumes and foil areas are shown as bands — not exact prescriptions. Board shape, foil profile, and local conditions all shift the real answer.
Skill level moves the result more than a single knot of wind does.
Parawing is marked New because the category is still evolving — treat that output as a rough starting point.
High confidence = well-documented across multiple brands. Medium = general consensus. New = emerging category, sizing is still settling.
All 12 sizing guides are live, each with source links and a calculator shortcut.
Kite size by rider weight, wind speed, board type, skill, and riding style.
Wing size by rider weight, wind speed, foil setup, and progression level.
Parawing size by rider weight, wind speed, foil setup, and swell conditions.
Wing foil board volume, length, and width by rider weight and skill level.