| wire gauge size | SWG(mm) | BWG(mm) | metric(mm) |
| 8 | 4. 06 | 4. 19 | 4. 00 |
| 9 | 3. 66 | 3. 76 | - |
| 10 | 3. 25 | 3. 40 | 3. 50 |
| 11 | 2. 95 | 3. 05 | 3. 00 |
| 12 | 2. 64 | 2. 77 | 2. 80 |
| 13 | 2. 34 | 2. 41 | 2. 50 |
| 14 | 2. 03 | 2. 11 | - |
| 15 | 1. 83 | 1. 83 | 1. 80 |
| 16 | 1. 63 | 1. 65 | 1. 65 |
| 17 | 1. 42 | 1. 47 | 1. 40 |
| 18 | 1. 22 | 1. 25 | 1. 20 |
| 19 | 1. 02 | 1. 07 | 1. 00 |
| 20 | 0. 91 | 0. 89 | 0. 90 |
| 21 | 0. 81 | 0. 813 | 0. 80 |
| 22 | 0. 71 | 0. 711 | 0. 70 |

