AWG 12 Wire
Diameter 0.0808″
Millimeters 2.052 mm
Cross-section 6,529 cmil
mm² 3.31
Nominal bare-conductor dimensions per ASTM B258. AWG is geometric: d = 0.005 × 92(36−n)/39 in with n = 12; area is derived from the diameter. Ampacity depends on insulation, bundling, and the electrical code in force — it is a property of the installation, not the gauge.
Neighboring gauges
| AWG | Diameter | mm | vs AWG 12 |
|---|---|---|---|
| 10 | 0.1019″ | 2.588 | +0.0211″ |
| 11 | 0.0907″ | 2.304 | +0.0099″ |
| 12 | 0.0808″ | 2.052 | — |
| 13 | 0.0720″ | 1.829 | −0.0088″ |
| 14 | 0.0641″ | 1.628 | −0.0167″ |
Measuring sheet metal, not wire? Sheet uses a different gauge scale — see 12 gauge sheet (steel: 0.1046″).