About Reactance.org

Advanced Electrical Engineering Tools, Calculators, Simulators and Learning Resources

Powering Knowledge Through Electrical Intelligence

Who We Are

Reactance.org is a dedicated electrical engineering platform designed to provide accurate, fast and accessible tools for understanding electricity, electronics, AC circuits, RF systems and modern engineering concepts.

Our mission is to create the world's most useful collection of electrical calculators, simulation tools and educational resources for students, hobbyists, engineers, technicians and researchers.

The website focuses on one of the most important concepts in electrical engineering: reactance — the opposition that capacitors and inductors provide to alternating current.

From simple Ohm's Law calculations to advanced RF impedance matching and circuit simulation, Reactance.org aims to become a complete engineering toolbox.

Our Electrical Engineering Tools

Reactance.org provides more than 150 specialized tools covering:

Reactance & AC Circuit Tools

  • Reactance Calculator
  • Capacitive Reactance Calculator
  • Inductive Reactance Calculator
  • AC Impedance Calculator
  • RLC Circuit Calculator
  • Series RLC Calculator
  • Parallel RLC Calculator
  • RC Circuit Calculator
  • RL Circuit Calculator

Resonance Tools

  • Resonance Frequency Calculator
  • LC Resonance Calculator
  • RLC Resonance Calculator
  • Quality Factor Calculator
  • Bandwidth Calculator
  • Half Power Frequency Calculator

Electrical Fundamentals

  • Ohm's Law Calculator
  • Watt Calculator
  • Voltage Divider Calculator
  • Current Divider Calculator
  • Power Calculator
  • Energy Consumption Calculator
  • Electrical Cost Calculator

Capacitor Tools

  • Capacitor Calculator
  • Capacitor Energy Calculator
  • Capacitor Charge Calculator
  • Capacitor Series Calculator
  • Capacitor Parallel Calculator
  • Capacitor Code Calculator
  • Motor Capacitor Calculator
  • Power Factor Capacitor Calculator

Inductor Tools

  • Inductor Calculator
  • Inductor Energy Calculator
  • Coil Inductance Calculator
  • Air Core Inductor Calculator
  • Solenoid Calculator
  • Transformer Inductance Calculator

Resistor Tools

  • Resistor Calculator
  • Resistor Color Code Calculator
  • SMD Resistor Calculator
  • LED Resistor Calculator
  • Pull-up Resistor Calculator
  • Voltage Drop Calculator

Filter Design Tools

  • Low Pass Filter Calculator
  • High Pass Filter Calculator
  • Band Pass Filter Calculator
  • Band Stop Filter Calculator
  • RC Filter Calculator
  • LC Filter Calculator
  • Butterworth Filter Calculator
  • Chebyshev Filter Calculator
  • Speaker Crossover Calculator

RF Engineering Tools

  • RF Impedance Calculator
  • Antenna Wavelength Calculator
  • Frequency To Wavelength Calculator
  • Quarter Wave Calculator
  • Dipole Antenna Calculator
  • Transmission Line Calculator
  • Smith Chart Calculator
  • VSWR Calculator
  • Return Loss Calculator
  • dBm Calculator

Signal Processing Tools

  • Frequency Converter
  • Period Calculator
  • Angular Frequency Calculator
  • Sampling Rate Calculator
  • Nyquist Frequency Calculator
  • FFT Calculator
  • Signal Generator
  • Waveform Visualizer

Power System Tools

  • Motor Power Calculator
  • Motor Current Calculator
  • Motor Efficiency Calculator
  • Three Phase Calculator
  • Reactive Power Calculator
  • Power Factor Calculator
  • Transformer Calculator
  • Transformer Turns Ratio Calculator

Simulation Tools

  • Interactive Circuit Simulator
  • AC Waveform Simulator
  • RLC Frequency Simulator
  • Phase Shift Simulator
  • Filter Response Simulator
  • Motor Simulator
  • Transformer Simulator

AI Engineering Tools

  • AI Circuit Analyzer
  • AI Electronics Tutor
  • AI Circuit Debugger
  • AI Formula Solver
  • AI Datasheet Analyzer

Why Reactance.org?

Contact Reactance.org

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