Wire Gauge Converter

Convert and compare AWG wire gauge sizes by diameter, circular mils, square millimeters, inches, millimeters, and common electrical wire size references.

Convert Wire Gauge

12 AWG = 0.0808 in diameter
Your wire gauge result will appear here.

Common wire gauge references

14 AWG diameter:
0.0641 in / 1.628 mm

12 AWG diameter:
0.0808 in / 2.053 mm

10 AWG diameter:
0.1019 in / 2.588 mm

6 AWG diameter:
0.1620 in / 4.115 mm

Where wire gauge conversions are used

Wire gauge conversions are useful for electrical wiring, low-voltage wiring, speaker wire, control wiring, battery cable, solar wiring, automotive wiring, copper wire sizing, and construction electrical planning.

Use this converter when comparing AWG size, wire diameter, circular mils, square millimeters, and metric wire references.

What your wire gauge result means

Your result shows the selected wire gauge converted into diameter and cross-sectional area references. It includes diameter in inches and millimeters, area in square millimeters, and circular mils.

This converter compares physical wire size only. It does not determine safe ampacity, breaker size, voltage drop, conduit fill, insulation rating, or code compliance.

Wire gauge converter tips

Frequently asked questions

What does AWG mean?

AWG means American Wire Gauge. It is a wire sizing system commonly used in the United States.

Is 12 AWG bigger than 14 AWG?

Yes. In AWG sizing, a smaller gauge number means a larger wire diameter.

What is the diameter of 12 AWG wire?

12 AWG wire has a bare conductor diameter of about 0.0808 inches, or about 2.053 millimeters.

What is circular mil area?

Circular mil area is a common way to express wire cross-sectional area. One circular mil is the area of a circle with a diameter of one mil, or 0.001 inch.

Does this converter tell me breaker size?

No. This converter compares wire size dimensions only. Breaker size and ampacity depend on wire material, insulation, temperature rating, installation method, and electrical code.