Size a conductor, check voltage drop, fill a conduit, lay out a bend — in seconds. Every result shows the worked formula and the NEC section behind it, then save or share it as a job record for the invoice or the inspector.
Every result shows the formula and the exact NEC section — no black boxes.
Keep results with their inputs, formula and code citation — export straight to the invoice or the inspector.
Every calculation saved to history, and each calculator opens with your usual conductor and temperature.
No account, no wifi, no timers. The whole toolbox works anywhere on the job.
Unlock the advanced calculators and job tools one time — every current and future NEC edition included.
A clean pro tool — no ads, no cross-app tracking, no data sold. Only anonymous usage stats, which you can switch off.
15 calculators + a searchable NEC reference: wire size · circuit sizing · voltage drop · conduit fill · conduit bending · box fill · motor circuits · transformer · 3-phase power · fault current · dwelling load · EV charger · grounding · Ohm's law · conversions.
Wireman is a reference tool, not a substitute for the adopted code. Always verify against your local NEC and amendments before performing work.