| Gauge
| Inches
| Millimeters
|
| 7/0
| 0.4900
| 12.45
|
| 6/0
| 0.4615
| 11.72
|
| 5/0
| 0.4305
| 10.93
|
| 4/0
| 0.3938
| 10.00
|
| 3/0
| 0.3625
| 9.207
|
| 2/0
| 0.3310
| 8.407
|
| 0
| 0.3065
| 7.785
|
| 1
| 0.2830
| 7.188
|
| 1½
| 0.272
| 6.91
|
| 2
| 0.2625
| 6.668
|
| 2½
| 0.253
| 6.43
|
| 3
| 0.2437
| 6.190
|
| 3½
| 0.234
| 5.94
|
| 4
| 0.2253
| 5.723
|
| 4½
| 0.216
| 5.49
|
| 5
| 0.2070
| 5.258
|
| 5½
| 0.200
| 5.08
|
| 6
| 0.1920
| 4.877
|
| 6½
| 0.184
| 4.67
|
| 7
| 0.1770
| 4.496
|
| 7½
| 0.170
| 4.32
|
| 8
| 0.1620
| 4.115
|
| 8½
| 0.155
| 3.94
|
| 9
| 0.1483
| 3.767
|
| 9½
| 0.142
| 3.61
|
|
| Gauge
| Inches
| Millimeters
|
| 10
| 0.1350
| 3.429
|
| 10¼
| 0.131
| 3.33
|
| 10½
| 0.128
| 3.25
|
| 11
| 0.1205
| 3.061
|
| 11½
| 0.113
| 2.87
|
| 12
| 0.1055
| 2.680
|
| 12½
| 0.099
| 2.51
|
| 13
| 0.0915
| 2.324
|
| 13½
| 0.086
| 2.18
|
| 14
| 0.0800
| 2.032
|
| 14½
| 0.076
| 1.93
|
| 15
| 0.0720
| 1.829
|
| 15½
| 0.067
| 1.70
|
| 16
| 0.0625
| 1.588
|
| 16½
| 0.058
| 1.47
|
| 17
| 0.0540
| 1.372
|
| 17½
| 0.051
| 1.30
|
| 18
| 0.0475
| 1.207
|
| 18½
| 0.044
| 1.12
|
| 19
| 0.0410
| 1.041
|
| 19½
| 0.038
| 0.97
|
| 20
| 0.0348
| 0.884
|
|