At 105 kg an intermediate shortboarder sits around 50 liters, a fish about 55, a midlength about 70 and a longboard about 88. 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 | 77.1 | 62.1 | 50.3 | 40.7 | 37.5 |
| Fish / hybrid / groveler | 81.0 | 66.5 | 55.4 | 45.6 | 42.0 |
| Midlength / funboard | 96.4 | 82.0 | 70.5 | 63.1 | 60.0 |
| Longboard | 111.8 | 96.3 | 88.1 | 81.4 | 82.5 |
| Soft-top | 115.7 | 96.3 | 80.5 | 67.2 | 63.7 |