At 100 kg an intermediate shortboarder sits around 48 liters, a fish about 53, a midlength about 67 and a longboard about 84. 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 | 73.4 | 59.2 | 47.9 | 38.8 | 35.7 |
| Fish / hybrid / groveler | 77.1 | 63.3 | 52.7 | 43.4 | 40.0 |
| Midlength / funboard | 91.8 | 78.1 | 67.1 | 60.1 | 57.1 |
| Longboard | 106.5 | 91.7 | 83.9 | 77.5 | 78.5 |
| Soft-top | 110.2 | 91.7 | 76.7 | 64.0 | 60.7 |