Windsurf Calc
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Today
What to take today
Conditions today
Your kit
Add the boards you actually have — or the ones you are looking at. Two touches are enough: class by eye and litres from the sticker.
Fleet
What is missing
Boards
Add the ones you are actually considering — this is a shortlist, not a warehouse. Width, fin range and the fin head are not asked: they are derived, and the answer says so.
Fins of your own
Rental fleets
A rental fleet is a named set: save what stands at the desk, and next season pick it in one tap.
Sail
Wind for your sails
Sail Size
Wind Speed
Fin
Recommendation
Sail
Board
Fin range
The one field we do not fill in for you, and that is not forgetfulness: tail width does not follow from volume. The survey gives anything from 31.9 cm (Starboard Hyper) to 41.5 (Goya Nitro) at 83–87 L — a spread of 9.6 cm, four times our corrections. A made-up number here would switch the checks «fin no longer than the tail and no shorter than a third of it» on and off at random, so empty is better.
On wave and freestyle-wave boards one hull carries different setups, and from ~110 L the same line moves to a single fin.
The order of the calculation: the board width gives the length range → the sail picks the point inside it → weight and level shift it. Stay within ±3 cm of the board's range.
Settings
How much to explain
General
Language
Theme
Wind Speed Unit
Weight Unit
When you do not go out
Uncomfortable from
I do not go out from
You as a rider
Your level
One question for a quick start. Below you can tick what you can actually do — the checklist outranks the card.
Level
–
Goal
Freeride character
A follow-up question. Two different boards live inside freeride: at the same volume they are 6–8 cm apart in width. It is the only class where the archetype needs a second question.
Sail type
A compatibility check: it catches pairs like a cambered race sail on a school board.
How many boards you plan on
The number of boards is not a constant: one covers a narrow wind range, and does not cover a wide one.
How often you sail
Sailor Weight
Every recommendation on every screen is calculated from this number.
Profile
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Disclaimer: these sports can be dangerous. Guidelines, not guarantees.
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