At 65 kg an intermediate shortboarder sits around 31 liters, a fish about 34, a midlength about 44 and a longboard about 54. 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 | 47.7 | 38.5 | 31.2 | 25.2 | 23.2 |
| Fish / hybrid / groveler | 50.1 | 41.1 | 34.3 | 28.2 | 26.0 |
| Midlength / funboard | 59.7 | 50.8 | 43.6 | 39.1 | 37.1 |
| Longboard | 69.2 | 59.6 | 54.5 | 50.4 | 51.1 |
| Soft-top | 71.6 | 59.6 | 49.9 | 41.6 | 39.4 |