AWG to Diameter Converter

The AWG (American Wire Gauge) system is a standardized method for measuring the diameter of electrical conductors. Our converter provides an instant, accurate translation between the nominal AWG size and its corresponding physical diameter in common units like inches or millimeters.

Simply input the AWG number you are working with—for example, if you have 14 AWG wire—and select your desired output unit. The tool uses established industry standards to calculate the precise diameter, ensuring minimal conversion error for your project.

We support bidirectional conversion, meaning you can also input a known diameter and receive the closest standard AWG size. This comprehensive approach makes it reliable for both design planning and on-site wiring verification.

Before using the converter, always confirm the intended application (e.g., lighting circuit vs. motor feeder). This context helps verify the appropriate wire gauge.

If you are designing a panel or raceway system, calculate your total required cross-sectional area before selecting wires. Using this tool for verification is smart practice.

• Double Check Units: Ensure the output unit (mm or inches) matches the specifications of your local electrical code and hardware.
• Consult Code Books: While this tool provides diameter, always cross-reference the result with NEC or IEC guidelines for ampacity tables.
• Account for Stranding: Remember that the calculated diameter is nominal; actual wire flexibility may vary slightly based on how the strands are grouped.