Electrical Calculator

Electrical Calculator is your all-in-one app for fast, accurate, and essential electrical calculations. Packed with 60+ powerful tools, it's designed for electricians, electrical & electronics engineers, and students. Every calculator includes built-in formulas and supports both USCS and SI units.

What's New:
• Category filters — find any calculator in seconds with purpose-based groups: Ohm's Law, Wiring & NEC, Power & Phase, Motors, Transformers and more
• Refreshed design with a cleaner look

Core Calculators:
• Voltage, Current, Resistance & Power (Ohm's Law)
• kVA to Amps / Amps to kVA (Single & Three Phase)

Electrical System Calculators:
• Voltage Drop Calculator (per NEC/IEEE standards)
• Wire Size Calculations (AWG & mm²)
• Power, Current & Horsepower (DC, Single & Three Phase)
• Efficiency & Power Factor Calculators
• Neutral Current (3-Phase Unbalanced Loads)

Transformers & Generators:
• Transformer Current, Voltage & Resistance Imbalance
• DC Generator

Reactance & Impedance:
• Inductive & Capacitive Reactance
• Resonant Frequency
• Characteristic Impedance (Parallel & Coaxial)
• Impedance Calculators (R-L-C combinations)

Series / Parallel Calculations:
• Resistance, Inductance & Capacitance (Series & Parallel)
• Unknown Resistance & Capacitance (Series & Parallel)

Components:
• Resistor Color Code — resistance to color bands and back
• Inductor & Capacitor Sizing Formulas

Lighting & Energy Tools:
• Luminous Intensity, Luminous Flux & Solid Angle
• Energy Cost Calculator
• Energy Stored in Resistors, Inductors & Capacitors

Conversions:
• Star ↔ Delta Conversion
• Field Strength & Electrical Potential
• Resistance, Resistivity, Conductance & Conductivity
• Capacitance, Inductance & Charge Density Converters
• Power Converter

Key Features:
• Category filters for fast navigation
• Flexible unit selection for inputs and outputs
• Full iPad support with split view
• Dark Mode and 12 languages
• Clean interface for the field, the shop, and the classroom