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Professional electrical calculator

Electrician ProCalc

A field calculator for electricians, technicians, apprentices, and small contractors who need electrical calculations with visible formulas, units, assumptions, saved history, projects, and reports.

Android app Package: com.fieldcalc.electrician_procalc 28 calculators, references, projects, and Pro exports.
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Electrician ProCalc

Search calculator, formula, unit...
Voltage drop Distance, current, material, and wire size.
Wire size Estimate standard conductor size by load.
3-phase power kW, kVA, amps, voltage, and power factor.
Conduit fill Compare fill percentage against assumptions.
Voltage drop result
2.7%

End voltage 226.0 V · limit 3.0% · copper conductor.

Formula used Vdrop = 2 x L x I x R / 1000. Verify final installation against local electrical code and manufacturer specifications.

Core calculators

  • Ohm's law, voltage, current, resistance, and power.
  • Single-phase and three-phase power with power factor.
  • Voltage drop, wire size estimate, AWG/mm² conversion, and cable length.
  • Conduit fill, box fill, derating, breaker/fuse helpers, motor load, generator sizing, and load schedules.

Job workflow

  • Start from common electrical calculators.
  • Review formulas, units, assumptions, and safety notes.
  • Save important calculations into history, favorites, and projects.
  • Use Pro for all calculators, unlimited records, custom presets, project reports, and PDF/CSV/text exports.

Professional workflow

  • Every result shows the formula, units, assumptions, and safety note.
  • Metric and imperial units are supported with locale-aware formatting.
  • Favorites and recent calculations keep common field tasks close.
  • Pro Lifetime and optional Pro Monthly are handled through official store payments.

Important limits

  • Results are estimates based on the inputs and assumptions shown.
  • The app does not replace licensed professional judgment.
  • Final work should be verified against local codes, manufacturer specifications, and project requirements.
  • No dangerous permissions are requested by the default app.