Electrical Calculator Pro

⚡ Electrical Calculator Pro — The Ultimate Engineering Toolkit for Electrical & Electronics Professionals

From field engineers to students, from electricians to design engineers — the most comprehensive electrical calculator app with 50+ professional tools, all in one place.

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🔌 BASIC ELECTRICAL CALCULATIONS

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• Ohm's Law Calculator (V, I, R, P)

• Power & Energy Calculator (kW, kWh, cost)

• Power Factor & Reactive Power (cos φ, kVAR)

• Impedance Calculator (R, XL, XC, Z)

• Neutral Current Calculator (unbalanced 3-phase)

• Transformer Ratio Calculator (primary/secondary)

• Analog Signal Converter (4-20mA / 0-10V)

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🔧 RESISTOR & ELECTRONICS

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• Resistor Color Code Reader (4 & 5 band)

• SMD Resistor Code Decoder (3 & 4 digit)

• Series & Parallel Resistor Calculator

• Current Divider Circuit Calculator

• LC Resonance Frequency Calculator

• Capacitor Code Decoder

• LED Series Resistor Calculator

• Voltage Divider Calculator

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🏭 MOTOR & DRIVES

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• Motor Current Calculator (1-phase & 3-phase, kW/HP)

• Motor Speed & Torque Calculator (RPM, Nm)

• Motor Protection Settings (overload, fuse sizing)

• Motor Insulation Resistance Evaluation

• Steinmetz Capacitor Calculator

• VFD / Drive Error Code Reference

• NEC Current Table

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🔋 BATTERY & POWER SYSTEMS

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• Battery Runtime Calculator (UPS/battery backup)

• Battery Charge Time Calculator

• UPS Power Calculator (VA/W conversion)

• CCTV Storage Calculator

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🔆 LIGHTING & SOLAR ENERGY

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• Lighting Calculator (lumen, lux, area)

• Street Lighting Calculator

• Emergency Lighting Calculator

• Solar Panel Calculator (panel count, battery sizing)

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🔌 CABLE & PROTECTION

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• Cable Cross-Section Calculator (IEC & NEC standards)

• Cable Impedance Calculator

• Cable Power Loss Calculator

• Cable Temperature Correction Factor

• Distributed Load Calculator

• Cable Capacity Table

• Fuse Curves Reference

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⚡ TRANSFORMER & COMPENSATION

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• Transformer Calculator (power, current, efficiency)

• Transformer Loss Calculator (copper & iron losses)

• VAR → µF Capacitor Conversion

• Grounding Calculator

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📋 REFERENCE & TABLES

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• IP Protection Class Guide (IP20–IP68)

• Pin Diagrams (RJ45, USB, HDMI, RS232, SD Card, SIM)

• Unit Converter (power, temperature, wire gauge)

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✨ APP FEATURES

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✅ Works fully offline — no internet required

✅ Available in 70+ languages

✅ Dark & Light theme support

✅ Clean, fast and professional interface

✅ Large buttons optimized for field use

✅ Instant results — no need to press a calculate button

Electrical Calculator Pro is an indispensable tool for electrical engineers, electronics technicians, automation specialists, electrical students and field crews.