Electrical Calculator

Electrical Calculator is your all-in-one app for fast, accurate, and essential electrical calculations. Packed with over 65 powerful tools, it’s designed for Electrical and Electronics Engineers, students, and professionals. All calculators include built-in formulas and support both USCS and SI units.

New Additions:
• Resistor Color Code Calculators – Convert resistance to color bands and vice versa.
• Upgraded Voltage Drop Calculations – Now fully aligned with NEC/IEEE standards.
• Transformer Resistance Imbalance

Core Calculators:
• Voltage Calculator
• Current Calculator
• Resistance Calculator
• Power Calculator
• kVA to Amps (Single Phase)

Electrical System Calculators:
• Voltage Drop Calculator (updated per NEC/IEEE standards)
• Wire Size Calculations (AWG & sq.mm)
• kVA to Amps (Three Phase)
• Amps to kVA (Single & Three Phase)
• Power, Current & Horsepower (DC, Single & Three Phase)
• Efficiency & Power Factor Calculators

Reactance & Impedance:
• Inductive Reactance
• Capacitive Reactance
• Resonant Frequency
• Characteristic Impedance (Parallel & Coaxial)

Series / Parallel Calculations:
• Resistance, Inductance & Capacitance (Series & Parallel)
• Unknown Resistance & Capacitance (Series & Parallel)
• R and L / R and C / L and C in Series or Parallel
• R, L, and C in Series or Parallel

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

Conversions:
• Star to Delta Conversion
• Delta to Star Conversion

Advanced Load Calculations:
• Neutral Current (3-Phase Unbalanced Loads)
• Inductor & Capacitor Sizing Formulas

Electrical Converters:
• Field Strength & Electrical Potential
• Resistance, Resistivity, Conductance & Conductivity
• Capacitance & Inductance
• Charge Converters: Linear, Surface, and Volume Charge Density
• Current Density Converters: Linear & Surface Current Density
• Power Converter

Key Features:
• Flexible unit selection for inputs and outputs
• Simple, clean interface for both students and professionals
• Supports Dark Mode and multiple localizations