Size Conversion Chart
SIZE CONVERSION CHART
| Gauge | Inches | Millimeters |
| 20 | - | 0.8mm |
| 18 | - | 1mm |
| 16 | - | 1.2mm |
| 14 | - | 1.6mm |
| 12 | - | 2mm |
| 10 | - | 2.4mm |
| 8 | - | 3.2mm |
| 6 | - | 4mm |
| 4 | - | 5mm |
| 2 | - | 6.5mm |
| 0 | - | 8mm |
| 00 | - | 10mm |
| - | 7/16" | 11mm |
| - | 1/2" | 12.5mm |
| - | 9/16" | 14mm |
| - | 5/8" | 16mm |
| - | 3/4" | 19mm |
| - | 7/8" | 22mm |
| - | 1" | 25mm |
| - | 1-1/8" | 28mm |
| - | 1-1/4" | 32mm |
| - | 1-3/8" | 35mm |
| - | 1-1/2" | 38mm |
| - | 1-3/4" | 44mm |
| - | 1-7/8" | 48mm |
| - | 2" | 51mm |