At 85 kg an intermediate shortboarder sits around 41 liters, a fish about 45, a midlength about 57 and a longboard about 71. 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 | 62.4 | 50.3 | 40.7 | 32.9 | 30.3 |
| Fish / hybrid / groveler | 65.5 | 53.8 | 44.8 | 36.9 | 34.0 |
| Midlength / funboard | 78.0 | 66.4 | 57.0 | 51.1 | 48.6 |
| Longboard | 90.5 | 77.9 | 71.3 | 65.9 | 66.8 |
| Soft-top | 93.6 | 77.9 | 65.2 | 54.4 | 51.6 |