Wire

SWG to mm Calculator — ChiefEngineer.in

Convert Standard Wire Gauge (SWG) to diameter and cross-section.

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Formula

Lookup table (SWG 0–50). A = πd²/4

Variables

  • n — SWG gauge number (0–50)
  • d — diameter (mm)
  • A — area (mm²)

Worked Example

Input: SWG 10

Result: d = 3.251 mm, A ≈ 8.30 mm²

Assumptions & Notes

Values from the SWG standard. Not the same as AWG.

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