Conductors and wiring

AWG, mm² and kcmil conductor converter

Convert between AWG and metric conductor area for solid round conductors, with the nearest common metric sizes.

Calculate

Conductor notation
Use 1–40 or 1/0–4/0.
mm²

Worked example

Solid-round conductor area

 mm²

Equivalent solid diameter
 mm
Area in kcmil
 kcmil
Nearest standard AWG size
14 AWG
Nearest common nominal metric size
2.5 mm²

Nearest sizes are comparisons, not substitutions. Confirm the applicable conductor standard and catalogue; finished cable diameter depends on conductor class, stranding, insulation and sheath construction.

Underlined figures are rounded. Select one to copy its full value.

Method and assumptions

Formula

AWG diameter = 0.005 in × 92^((36 − n) ÷ 39); area = πd² ÷ 4

Geometry describes a solid round conductor. Stranding, compaction and insulation change physical diameter.

Limits of this result

  • Nearest AWG and common nominal metric sizes are comparisons, not substitutions; confirm the conductor standard, material, class and manufacturer table used for the installation.
  • Calculated diameter is bare solid-round geometry. Finished cable diameter depends on stranding, compaction, insulation, screen, armour and sheath construction.

Technical sources

  1. Copper Wire Tables, Handbook 100US National Bureau of Standards / NIST · 1966
  2. IEC 60228:2023 — Conductors of insulated cablesIEC · Edition 4.0, 2023-12-11

Put the value to work

Read the related engineering guidance, or carry this task into System Builder to identify the signal path and EpiSensor products.

Continue in System Builder Read: Selecting Current Transformers

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