| 英制 公制換算尺寸一覽表 | |||
| 英吋 | 米厘 | 公分 | 稱呼 |
| inch | mm | cm | |
| 1/64'' | 0.3969 | 0.0397 | 1厘25 |
| 1/32'' | 0.7938 | 0.0794 | 1厘75 |
| 3/64'' | 1.1906 | 0.1191 | 3厘75 |
| 1/16'' | 1.5875 | 0.1588 | 5厘 |
| 5/64'' | 1.9844 | 0.1984 | 6厘25 |
| 3/32'' | 2.3813 | 0.2381 | 7厘5 |
| 7/64'' | 2.7781 | 0.2778 | 8厘75 |
| 1/8 '' | 3.175 | 0.3175 | 1分 |
| 9/64'' | 3.5719 | 0.3572 | 1分1厘25 |
| 5/32'' | 3.9688 | 0.3969 | 1分2厘5 |
| 11/64'' | 4.3656 | 0.4366 | 1分3厘75 |
| 3/16'' | 4.7625 | 0.4763 | 1分5厘 |
| 13/64'' | 5.1594 | 0.5159 | 1分6厘25 |
| 7/32'' | 5.5563 | 0.5556 | 1分7厘5 |
| 15/64'' | 5.9531 | 0.5953 | 1分8厘75 |
| 1/4 '' | 6.35 | 0.635 | 2分 |
| 17/64'' | 6.7469 | 0.6747 | 2分1厘25 |
| 9/32'' | 7.1438 | 0.7144 | 2分2厘5 |
| 19/64'' | 7.5406 | 0.7541 | 2分3厘75 |
| 5/16'' | 7.9375 | 0.7938 | 2分5厘 |
| 21/64'' | 8.3344 | 0.8334 | 2分6厘25 |
| 11/32'' | 8.7313 | 0.8731 | 2分7厘5 |
| 23/64'' | 9.1281 | 0.9128 | 2分8厘75 |
| 3/8 '' | 9.525 | 0.9525 | 3分 |
| 25/64'' | 9.9219 | 0.9922 | 3分1厘25 |
| 13/32'' | 10.3188 | 1.0319 | 3分2厘5 |
| 27/64'' | 10.7156 | 1.0716 | 3分3厘75 |
| 7/16'' | 11.1125 | 1.1113 | 3分5厘 |
| 29/64'' | 11.5094 | 1.1509 | 3分6厘25 |
| 15/32'' | 11.9063 | 1.1906 | 3分7厘5 |
| 31/64'' | 12.3031 | 1.2303 | 3分8厘75 |
| 1/2 '' | 12.7 | 1.27 | 4分 |
| 33/64'' | 13.0969 | 1.3097 | 4分1厘25 |
| 17/32'' | 13.4938 | 1.3494 | 4分2厘5 |
| 35/64'' | 13.8906 | 1.3891 | 4分3厘75 |
| 9/16'' | 14.2875 | 1.4288 | 4分5厘 |
| 37/64'' | 14.6844 | 1.4684 | 4分6厘25 |
| 19/32'' | 15.0813 | 1.5081 | 4分7厘5 |
| 39/64'' | 15.4781 | 1.5478 | 4分8厘75 |
| 5/8 '' | 15.875 | 1.5875 | 5分 |
| 41/64'' | 16.2719 | 1.6272 | 5分1厘25 |
| 21/32'' | 16.6688 | 1.6669 | 5分2厘5 |
| 43/64'' | 17.0656 | 1.7066 | 5分3厘75 |
| 11/16'' | 17.4625 | 1.7463 | 5分5厘 |
| 45/64'' | 17.8594 | 1.7859 | 5分6厘25 |
| 23/32'' | 18.2563 | 1.8256 | 5分7厘5 |
| 47/64'' | 18.6531 | 1.8653 | 5分8厘75 |
| 3/4 '' | 19.05 | 1.905 | 6分 |
| 49/64'' | 19.4469 | 1.9447 | 6分1厘25 |
| 25/32'' | 19.8438 | 1.9844 | 6分2厘5 |
| 51/64'' | 20.2406 | 2.0241 | 6分3厘75 |
| 13/16'' | 20.6375 | 2.0638 | 6分5厘 |
| 53/64'' | 21.0344 | 2.1034 | 6分6厘25 |
| 27/32'' | 21.4313 | 2.1431 | 6分7厘5 |
| 55/64'' | 21.8281 | 2.1828 | 6分8厘75 |
| 7/8 '' | 22.225 | 2.2225 | 7分 |
| 57/64'' | 22.6219 | 2.2622 | 7分1厘25 |
| 29/32'' | 23.0188 | 2.3019 | 7分2厘5 |
| 59/64'' | 23.4156 | 2.3416 | 7分3厘75 |
| 15/16'' | 23.8125 | 2.3813 | 7分5厘 |
| 61/64'' | 24.2094 | 2.4209 | 7分6厘25 |
| 31/32'' | 24.6063 | 2.4606 | 7分7厘5 |
| 63/64'' | 25.0031 | 2.5003 | 7分8厘75 |
| 1 '' | 25.4 | 2.54 | 8分 = 1吋 |
| 1- 1/32'' | 26.1938 | 2.6194 | 1吋2 厘 5 |
| 1- 1/16'' | 26.9875 | 2.6988 | 1吋5 厘 |
| 1- 3/32'' | 27.7813 | 2.7781 | 1吋7 厘 5 |
| 1- 1/8 '' | 28.575 | 2.8575 | 1吋1 分 |
| 1- 5/32'' | 29.3688 | 2.9369 | 1吋1 分2 厘5 |
| 1- 3/16'' | 30.1625 | 3.0163 | 1吋1 分5 厘 |
| 1- 7/32'' | 30.9563 | 3.0956 | 1吋1 分7 厘 5 |
| 1- 1/4 '' | 31.75 | 3.175 | 10分=1吋2分 |
| 1- 5/16'' | 33.3375 | 3.3338 | 1吋2 分5 厘 |
| 1- 3/8 '' | 34.925 | 3.4925 | 1吋3 分 |
| 1- 7/16'' | 36.5125 | 3.6513 | 1吋3 分5 厘 |
| 1- 1/2 '' | 38.1 | 3.81 | 12分=1吋4分 |
| 1- 9/16'' | 39.6875 | 3.9688 | 1吋4 分5 厘 |
| 1- 5/8 '' | 41.275 | 4.1275 | 1吋5 分 |
| 1-11/16'' | 42.8625 | 4.2863 | 1吋5 分5 厘 |
| 1- 3/4 '' | 44.45 | 4.445 | 1吋6 分 |
| 1-13/16'' | 46.0375 | 4.6038 | 1吋6 分5 厘 |
| 1- 7/8 '' | 47.625 | 4.7625 | 1吋7 分 |
| 1-15/16'' | 49.2125 | 4.9213 | 1吋7 分5 厘 |
| 2 '' | 50.8 | 5.08 | 16分 = 2吋 |