AWG 12 Wire Diameter and Properties
12 AWG wire has a diameter of approximately 2.053 mm (0.0808 in) and is commonly rated for 20 A circuits.
How to use this tool
- Enter awg gauge in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your diameter and the full breakdown beneath it.
Look up the diameter, cross-sectional area, and resistance of 12 AWG wire used in standard 20-amp household circuits.
Frequently asked questions
- What is AWG 14 wire diameter?
- AWG 14 wire has a diameter of approximately 1.628 mm and a cross-sectional area of 2.08 mm². It is commonly used for 15-amp household circuits.