AWG 19 Wire
Diameter 0.0359″
Millimeters 0.912 mm
Cross-section 1,289 cmil
mm² 0.6530
Nominal bare-conductor dimensions per ASTM B258. AWG is geometric: d = 0.005 × 92(36−n)/39 in with n = 19; 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 19 |
|---|---|---|---|
| 17 | 0.0453″ | 1.151 | +0.0094″ |
| 18 | 0.0403″ | 1.024 | +0.0044″ |
| 19 | 0.0359″ | 0.912 | — |
| 20 | 0.0320″ | 0.813 | −0.0039″ |
| 21 | 0.0285″ | 0.724 | −0.0074″ |
Measuring sheet metal, not wire? Sheet uses a different gauge scale — see 19 gauge sheet (steel: 0.0418″).