At 120 kg an intermediate shortboarder sits around 58 liters, a fish about 63, a midlength about 80 and a longboard about 101. 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 | 88.1 | 71.0 | 57.5 | 46.5 | 42.8 |
| Fish / hybrid / groveler | 92.5 | 76.0 | 63.3 | 52.1 | 48.0 |
| Midlength / funboard | 110.2 | 93.7 | 80.5 | 72.1 | 68.5 |
| Longboard | 127.8 | 110.0 | 100.7 | 93.0 | 94.2 |
| Soft-top | 132.2 | 110.0 | 92.0 | 76.7 | 72.8 |