At 50 kg an intermediate shortboarder sits around 24 liters, a fish about 26, a midlength about 34 and a longboard about 42. 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 | 36.7 | 29.6 | 24.0 | 19.4 | 17.9 |
| Fish / hybrid / groveler | 38.6 | 31.7 | 26.4 | 21.7 | 20.0 |
| Midlength / funboard | 45.9 | 39.0 | 33.6 | 30.0 | 28.6 |
| Longboard | 53.2 | 45.8 | 41.9 | 38.8 | 39.3 |
| Soft-top | 55.1 | 45.8 | 38.4 | 32.0 | 30.3 |