At 90 kg an intermediate shortboarder sits around 43 liters, a fish about 48, a midlength about 60 and a longboard about 76. 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 | 66.1 | 53.2 | 43.1 | 34.9 | 32.1 |
| Fish / hybrid / groveler | 69.4 | 57.0 | 47.5 | 39.1 | 36.0 |
| Midlength / funboard | 82.6 | 70.3 | 60.4 | 54.1 | 51.4 |
| Longboard | 95.8 | 82.5 | 75.5 | 69.8 | 70.7 |
| Soft-top | 99.1 | 82.5 | 69.0 | 57.6 | 54.6 |