AWG Calculator: Wire Size

AWG Calculator: Wire Size is a professional tool for electricians to perform NEC-based wire size, voltage drop, and ampacity calculations quickly in the field, during inspections, or while planning installations. It provides accurate, code-based results with NEC references at your fingertips.

Key features include wire size (AWG) calculations, voltage drop, adjusted ampacity based on installation conditions, circuit breaker sizing, conduit and box fill calculations, and residential load calculations. It also offers Ohm’s Law calculations, temperature customization, specialized motor, fire pump, arc welder, and HVAC calculations, plus offline assistance (ChatAWG) and flexible subscription options.