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Version 2.0 is a complete redesign: • New home screen with favorites, recents and search • Dark mode and 9 languages • 28 professional calculators in PRO (existing users keep everything that was free for them) • Charts for every calculator (PRO) • PDF reports and CSV export (PRO) • History: tap for details, re-open with inputs, add notes (PRO) • New unit converter with AWG (PRO) • Back arrow and titles on every screen • Decimal comma support, bug fixes and a faster, animated launch
61 electrical engineering calculators for circuits, power, and electronics
Electrical Engineering Calculator is a fast, offline toolkit of 61 professional calculators for electricians, electrical and electronics engineers, technicians and students. Every result shows the formula used, engineering warnings and a built-in guide, so you understand the answer instead of just seeing it. ⚡ WHAT'S INSIDE — 61 CALCULATORS IN 5 CATEGORIES ◆ Basic Circuit (12) — Ohm's Law, Voltage, Current, Resistance (series/parallel), Power, Energy Consumption, Electricity Cost, Joule, Watt Converter, Electric Charge, Thevenin/Norton Equivalent, Kirchhoff's Laws (KVL/KCL) ◆ AC Circuit (11) — Impedance, Reactance, Power Factor, Power Factor Correction (capacitor bank sizing), Frequency, RMS Voltage, RMS Current, Apparent, Real and Reactive Power, Phase Angle ◆ Components (10) — Resistor Color Code (4/5-band), LED Resistor, Capacitor, Inductor, Capacitor Energy, Inductor Energy, RC & RL Time Constant, RLC Resonance, Filter (low/high/band-pass) ◆ Power Systems (15) — Wire / Cable Sizing (NEC ampacity + voltage drop), Voltage Drop, Circuit Breaker & Fuse Sizing (NEC 240.4), Conduit Fill (NEC Ch. 9), Three-Phase Power, Star-Delta Conversion, Transformer, Motor Current (FLA), Motor Power & Torque, Generator Sizing, Load Calculation (NEC 220), Short-Circuit Current, Transmission Line Loss, Battery Capacity, UPS Runtime ◆ Electronics (13) — Op-Amp Gain, Voltage Divider, Transistor (BJT) Bias, ADC Resolution, DAC Output, PWM Duty Cycle, 555/RC/LC/Crystal Oscillator, Gain (dB), dB/dBm Converter, Signal Attenuation, Signal Frequency & Wavelength, SMD Resistor Code, PCB Trace Width (IPC-2221) ✅ FREE FEATURES • 33 essential calculators, free forever: Ohm's Law, power, energy cost, AC power & RMS, reactance & impedance, resistor color code, LED resistor, capacitor & inductor, RC/RL time constant, voltage drop, battery capacity, voltage divider, op-amp gain, dB/dBm, SMD code and more • Clear results with the formula used, warnings and notes • Built-in engineering guide for every calculator: formulas, explanation, worked example, safety tips and standards (IEC, IEEE, NEC, IPC) • Search across all calculators by name or keyword • Favorites and recent calculators on the home screen • Automatic calculation history with bookmarks • Share or copy results in one tap (long-press any value to copy it) • Light, dark or system theme • Adjustable precision (0–6 decimal places) • Works with a decimal comma or dot, whichever your keyboard uses • 9 languages: English, Español, Português, Français, Deutsch, Italiano, Türkçe, Bahasa Indonesia, हिन्दी • Works 100% offline, no account needed 👑 PRO — ONE-TIME PURCHASE, LIFETIME ACCESS • 28 professional calculators unlocked: – Power systems & code tools: Wire Sizing, Circuit Breaker Sizing, Conduit Fill, Load Calculation (NEC 220), Short-Circuit Current, Transformer, Three-Phase Power, Star-Delta, Generator Sizing, Motor Current & Power, UPS Runtime, Transmission Line Loss, Power Factor Correction – Circuit analysis & components: Thevenin/Norton, Kirchhoff's Laws, RLC Resonance, Filter Design, Capacitor & Inductor Energy – Electronics: Transistor Bias, ADC, DAC, PWM, Oscillator, Signal Frequency, Signal Attenuation, PCB Trace Width • Interactive charts for every calculator: V-I lines, RC/RL charge curves, Bode plots, resonance curves, power triangles and more • Professional PDF calculation reports and CSV (Excel) export • Re-open any saved calculation with its inputs, and add notes to it • Engineering unit converter: V, A, Ω, F, H, W, hp, J, kWh, BTU, Ah, Hz, rpm, mm², AWG, kcmil, °C/°F/K and more • Accent color themes, including Material You wallpaper colors • No ads Designed for electrical engineers, electricians, electronics technicians, engineering students and makers who want quick, correct answers on the job site, in the lab or in class. Website: www.nexovia.cloud Support: support@nexovia.cloud