| 級 | mm | point |
| 1 Q | 0.25 mm | 0.7087 point |
| 2 Q | 0.5 mm | 1.4173 point |
| 3 Q | 0.75 mm | 2.126 point |
| 4 Q | 1 mm | 2.8346 point |
| 5 Q | 1.25 mm | 3.5433 point |
| 6 Q | 1.5 mm | 4.252 point |
| 7 Q | 1.75 mm | 4.961 point |
| 8 Q | 2 mm | 6.379 point |
| 9 Q | 2.25 mm | 6.379 point |
| 10 Q | 2.5 mm | 7.088 point |
| 11 Q | 2.75 mm | 7.796 point |
| 12 Q | 3 mm | 8.505 point |
| 13 Q | 3.25 mm | 9.214 point |
| 14 Q | 3.5 mm | 9.923 point |
| 15 Q | 3.75 mm | 10.631 point |
| 16 Q | 4 mm | 11.34 point |
| 18 Q | 4.5 mm | 12.758 point |
| 20 Q | 5 mm | 14.175 point |
| 24 Q | 6 mm | 17.01 point |
| 28 Q | 7 mm | 19.845 point |
| 32 Q | 8 mm | 22.68 point |
| 38 Q | 9.5 mm | 26.933 point |
| 44 Q | 11 mm | 31.185 point |
| 50 Q | 12.5 mm | 35.438 point |
| 56 Q | 14 mm | 39.69 point |
| 62 Q | 15.5 mm | 43.943 point |
| 70 Q | 17.5 mm | 49.613 point |
| 80 Q | 20 mm | 56.7 point |
| 90 Q | 22.5 mm | 63.788 point |
| 100 Q | 25 mm | 70.875 point |