At 80 kg an intermediate shortboarder sits around 38 liters, a fish about 42, a midlength about 54 and a longboard about 67. 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 | 58.8 | 47.3 | 38.4 | 31.0 | 28.6 |
| Fish / hybrid / groveler | 61.7 | 50.6 | 42.2 | 34.7 | 32.0 |
| Midlength / funboard | 73.4 | 62.5 | 53.7 | 48.1 | 45.7 |
| Longboard | 85.2 | 73.4 | 67.1 | 62.0 | 62.8 |
| Soft-top | 88.1 | 73.4 | 61.4 | 51.2 | 48.6 |