At 75 kg an intermediate shortboarder sits around 36 liters, a fish about 40, a midlength about 50 and a longboard about 63. 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 | 55.1 | 44.4 | 36.0 | 29.1 | 26.8 |
| Fish / hybrid / groveler | 57.8 | 47.5 | 39.6 | 32.6 | 30.0 |
| Midlength / funboard | 68.8 | 58.6 | 50.3 | 45.1 | 42.8 |
| Longboard | 79.9 | 68.8 | 62.9 | 58.1 | 58.9 |
| Soft-top | 82.6 | 68.8 | 57.5 | 48.0 | 45.5 |