| Boards | Circular inches |
|---|---|
| 1 bd | 15.278873906544 circ in |
| 2 bd | 30.557747813087 circ in |
| 3 bd | 45.836621719631 circ in |
| 4 bd | 61.115495626175 circ in |
| 5 bd | 76.394369532719 circ in |
| 6 bd | 91.673243439262 circ in |
| 7 bd | 106.95211734581 circ in |
| 8 bd | 122.23099125235 circ in |
| 9 bd | 137.50986515889 circ in |
| 10 bd | 152.78873906544 circ in |
| Boards | Circular inches |
|---|---|
| 15 bd | 229.18310859816 circ in |
| 20 bd | 305.57747813087 circ in |
| 30 bd | 458.36621719631 circ in |
| 40 bd | 611.15495626175 circ in |
| 50 bd | 763.94369532719 circ in |
| 60 bd | 916.73243439262 circ in |
| 70 bd | 1069.5211734581 circ in |
| 80 bd | 1222.3099125235 circ in |
| 90 bd | 1375.0986515889 circ in |
| 100 bd | 1527.8873906544 circ in |
| Boards | Circular inches |
|---|---|
| 500 bd | 7639.4369532719 circ in |
| 1000 bd | 15278.873906544 circ in |
| 1500 bd | 22918.310859816 circ in |
| 10000 bd | 152788.73906544 circ in |
| 50000 bd | 763943.69532719 circ in |
| 100000 bd | 1527887.3906544 circ in |
| 500000 bd | 7639436.9532719 circ in |
| 1000000 bd | 15278873.906544 circ in |
| 5000000 bd | 76394369.532719 circ in |
| 10000000 bd | 152788739.06544 circ in |