At 45 kg an intermediate shortboarder sits around 22 liters, a fish about 24, a midlength about 30 and a longboard about 38. Volume is the number every brand now prints on its boards: the liters of foam, which set how easily a board paddles and floats. These tables come from SurfCalc's own model, fitted to the published guides of major brands, for an average adult: 30 to 39, average fitness, surfing weekly in average waves. The calculator adjusts for your age, fitness, how often you surf, wave power and size, wetsuit and construction, and gives a ±5 % range to shop with.
| Board type | 1 Beginner | 2 Beg. / int. | 3 Intermediate | 4 Advanced | 5 Expert |
|---|---|---|---|---|---|
| Performance shortboard | 33.0 | 26.6 | 21.6 | 17.4 | 16.1 |
| Fish / hybrid / groveler | 34.7 | 28.5 | 23.7 | 19.5 | 18.0 |
| Midlength / funboard | 41.3 | 35.1 | 30.2 | 27.0 | 25.7 |
| Longboard | 47.9 | 41.3 | 37.8 | 34.9 | 35.3 |
| Soft-top | 49.6 | 41.3 | 34.5 | 28.8 | 27.3 |