Wire Gauge Calculator
AWG Gauge Number
Enter gauge number (e.g., 12 for 12 AWG).
Length (m)
Length of wire in meters.
Calculate
Results
Diameter:
mm
Cross-sectional Area:
mm²
Resistance (total):
Ω
Resistance per km:
Ω/km
Formula:
Diameter (mm) = 0.127 × 92
(36 - AWG)/39
. Area = π × (d/2)². Resistance = ρ × L / A, where ρ = 1.724e-8 Ω·m (copper).