About ElectriCalc

ElectriCalc provides free, accurate electrical engineering calculators for students, electricians, electronics hobbyists, and engineers.

Our Tools

We cover Ohm's Law fundamentals, wire sizing and voltage drop per NEC standards, resistor color code decoding, LED circuit design, RC time constants, and inductance calculations — all in your browser with no installation required.

Accuracy & Standards

Wire sizing and ampacity values follow the National Electrical Code (NEC) 310.15 tables for copper conductors at 75°C. Calculations are intended as a guide; always verify with a licensed electrician for real installations.

Privacy

All calculations run in your browser. No data is sent to our servers. We use Google Analytics (anonymized) to improve the site.