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Wire Gauge Calculator

Use 0 for AWG 0, -1 for 2/0, -2 for 3/0, -3 for 4/0

Common AWG Sizes

Results

AWG12
Diameter2.0525 mm (0.08081 in)

Cross-Sectional Area

mm²3.3088
in²0.005129
cmil6529.9
kcmil6.5299
Continuous Current~16 A

Based on 60°C insulation with 80% derating. Refer to manufacturer specifications for application-specific requirements.

Show formulas

Wire Diameter

dn (in)=0.005×9236−n39d_n \, (\mathrm{in}) = 0.005 \times 92^{\frac{36-n}{39}}
dn (mm)=0.127×9236−n39d_n \, (\mathrm{mm}) = 0.127 \times 92^{\frac{36-n}{39}}

Cross-Sectional Area

An=π4×dn2A_n = \frac{\pi}{4} \times d_n^2
An (cmil)=(dn×1000)2where dn in inchesA_n \, (\mathrm{cmil}) = (d_n \times 1000)^2 \quad \text{where } d_n \text{ in inches}

Where n is the AWG gauge number. For gauges larger than 0, use negative numbers: -1 for 2/0, -2 for 3/0, -3 for 4/0.