Electrician Calculator Pro 26

Stop paying monthly for tools you use on the job. Electrician Calculator Pro puts the everyday electrical calculations in your pocket — fast, accurate, and fully offline so they work anywhere on site, with no signal and no account.

WHAT'S INSIDE
- Voltage Drop — single- or three-phase, copper or aluminum, by length and current, with drop % and the voltage at the load.
- Wire Size & Ampacity — pick the right conductor by load and temperature rating, based on the published ampacity tables.
- Conduit Fill — the EMT trade size for any number of THHN conductors, with the fill percentage and the 40% limit applied for you.
- Box Fill — required box volume from conductors, devices, clamps and grounds.
- Ohm's Law — solve any two of V, I, R and P for the other two.
- Motor Full-Load Current — FLC by horsepower and voltage for single- and three-phase motors.
- Unit Converter — AWG to mm², kW to HP, Fahrenheit to Celsius, feet to meters and back.
- Three-Phase Power — kVA, kW and line current from voltage, current and power factor.

WHY THIS APP
- Buy once. No subscription, ever. The competition charges every month for the same math.
- Works 100% offline — basements, new construction, anywhere.
- Clean, fast input designed for the field, not a spreadsheet.
- Available in English and Spanish.

Three core calculators are free to try. A single one-time purchase unlocks every calculator and removes all limits — no ads, no account, no subscription.

NOTE
For reference only. All values are based on publicly published National Electrical Code (NFPA 70) tables and standard formulas. Always verify against the current edition of the NEC and your local code before performing any work. Not affiliated with or endorsed by the NFPA.