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