Wire

AWG to mm Calculator — ChiefEngineer.in

Convert American Wire Gauge (AWG) to diameter and cross-section.

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Formula

d = 0.127 × 92(36−n)/39
A = πd²/4

Variables

  • n — AWG gauge number
  • d — diameter (mm)
  • A — area (mm²)

Worked Example

Input: AWG 12

Result: d ≈ 2.0525 mm, A ≈ 3.309 mm²

Assumptions & Notes

Valid for solid round conductors. Formula from ASTM B258.

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