Windsurfing Calculator

Your details

Include wetsuit, harness, and footwear - about 3-5 kg extra. Heavier riders need more sail area for the same wind.
kg
Average wind speed at the water surface. Use the Beaufort scale as a guide: Force 4 (11-16 kt) is ideal for most intermediate riders.
Recommended sail sizeLarge sail - light wind conditions
8.3m²

Ideal sail area for your weight and wind conditions

Board volume115L
Fin depth44cm
Estimated planing speed3.7kt
Beaufort description4 - Moderate breeze
Wind speed in knots15kt
8.3 m2
Storm / high wind<4.5Strong / wave4.5-6.5Moderate / freeride6.5-8.5Light / longboard8.5-10.5Very light / formula10.5+

Sail 8.3 m2, board 115 L, fin 44 cm.

  • A 8.3 m2 sail gives you the power balance for 15 kt of wind at your weight.
  • A board around 115 L keeps you floating comfortably and is forgiving enough for your experience level.
  • A 44 cm fin balances lateral resistance and early-planing drive for a 8.3 m2 sail.

Next stepPractice water starts and harness use. As you improve, you can drop board volume and try smaller sails in higher winds.

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