Convert American Wire Gauge (AWG) to diameter in millimeters and inches, plus cross-sectional area.
Electrical • AWG
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American Wire Gauge (AWG) is the US standard for wire thickness, and the number runs backwards — a smaller AWG number means a thicker wire. This chart converts AWG to diameter in millimeters and inches plus cross-sectional area in mm².
Electricians, makers, and audio/automotive hobbyists use it to pick the right wire for a given current and to match US and metric specs. As a rule of thumb, every 6 AWG steps roughly halves or doubles the wire's diameter.