At 55 kg an intermediate shortboarder sits around 26 liters, a fish about 29, a midlength about 37 and a longboard about 46. 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 | 40.4 | 32.5 | 26.4 | 21.3 | 19.6 |
| Fish / hybrid / groveler | 42.4 | 34.8 | 29.0 | 23.9 | 22.0 |
| Midlength / funboard | 50.5 | 43.0 | 36.9 | 33.0 | 31.4 |
| Longboard | 58.6 | 50.4 | 46.1 | 42.6 | 43.2 |
| Soft-top | 60.6 | 50.4 | 42.2 | 35.2 | 33.4 |