Wire AWG Size Conversion Calculator

This tool is used to calculate the nominal equivalent values of wire sizes such as American Wire Gauge [AWG], Square Millimeter Area [mm²], Circular Mil Area [CMA], and more. Just put in a known measurement or value and all of the equivalent values will be automatically calculated and displayed.

NOTE: The conversion values in this calculator are based on solid wire.

The American Wire Gauge (AWG) also known as the Brown and Sharpe Wire Gauge was developed in 1855. The measurement originated by counting the number of times the wire needed to be drawn through a die to reach the desired size. Because of this, the sizes are inversely and logarithmically proportional, meaning larger wires have a smaller AWG value and a 10 AWG wire has approximately 10X more area than a 20 AWG wire. AWG is commonly used in North America and over 65 other countries.