| Maat | Inches | Centimeters |
| M1+ | 2⅜ - 2¹¹∕₁₆ | 6.2 - 7.1 |
| M2+ | 2¾ - 3⅛ | 7.2 - 8.2 |
| M3+ | 3 ³∕₁₆ - 3⅝ | 8.3 - 9.2 |
| M4+ | 3¹¹∕₁₆ - 4 | 9.3 - 10.2 |
| 0 | 4 - 4¼ | 10.2-10.9 |
| 1 | 4⁵∕₁₆ - 4⁹∕₁₆ | 11.0 - 11.7 |
| 2 | 4⅝ - 4⅞ | 11.8 - 12.5 |
| 3 | 4¹⁵∕₁₆ - 5³∕₁₆ | 12.6 - 13.3 |
| 4 | 5¼ - 5½ | 13.4 - 14.1 |
| 5 | 5⁹∕₁₆ - 5¹³∕₁₆ | 14.2 - 14.9 |
| 6 | 5⅞ - 6¹∕₈ | 15.0 - 15.7 |
| 7* | 6³∕₁₆ - 6⁷∕₁₆ | 15.8 - 16.5 |
| 8* | 6½ - 6¾ | 16.6 - 17.3 |
| 9* | 6¹³∕₁₆ - 7¹∕₁₆ | 17.4 - 18.1 |
| 10* | 7¹∕₈ - 7½ | 18.2 - 18.9 |
+ Leuke kleine bootgroottes
* BFB alleen regelmatige zool
