Wire Gauge / Ampacity

AWG ↔ mm² ↔ ampacity; voltage drop, dissipation

About this tool

Convert American Wire Gauge to metric area, with voltage drop and ampacity.

Inputs

Material: copper or aluminium.
AWG (use negative numbers for 0/00/000/0000) or area in mm².
Run length (one-way), current, source voltage.

Output

Wire diameter, round-trip resistance, voltage drop and percentage, cable power loss, approximate single-conductor ampacity (NEC 75°C, free air). Always verify with local code.