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Electronics and Physics Calculators

63 free electronics and physics tools for circuits, power, signals, batteries, fields, components, and simulators.

Browse electronics and physics calculators by topic. This directory groups resistor tools, RC/RL/RLC circuits, AC signals, power systems, semiconductors, physics formulas, and circuit simulators so each electrical problem has a clear starting point.

Featured Electronics Tools Start here

Ohm's Law Calculator Resistor Series Parallel Calculator Voltage Divider Calculator RC Circuit Simulator RLC Impedance Calculator Battery Runtime Calculator

Browse Electronics Calculators by Topic

Ohms Law, Resistors and Dividers Capacitors, Inductors and Time Constants RLC, AC Power and Signals Power, Battery and Wiring Semiconductors and Circuit Devices Physics Fields and Circuit Laws Circuit and Control Simulators

Ohms Law, Resistors and Dividers

12 tools

Calculate resistance networks, Ohm's law values, voltage dividers, current dividers, color codes, wattage, and bridge circuits.

Ohm's Law Calculator Resistor Series Parallel Calculator Parallel Resistor Calculator Series Resistor Calculator Resistor Color Code Calculator Resistor Wattage Calculator Voltage Divider Calculator Current Divider Calculator Variable Resistor Divider Calculator Wheatstone Bridge Calculator Electrical Conductance Calculator Resistance Temperature Coefficient Calculator

Capacitors, Inductors and Time Constants

10 tools

Work with RC delay, capacitor charging, capacitor energy, inductors, RL time constants, and series-parallel components.

RC Delay Calculator RC Time Constant Calculator Capacitor Charge Discharge Calculator Capacitance Series Parallel Calculator Capacitive Reactance Calculator Capacitor Energy Storage Calculator Inductive Reactance Calculator Inductor Series Parallel Calculator Inductor Energy Storage Calculator RL Time Constant Calculator

RLC, AC Power and Signals

14 tools

Analyze RLC impedance, resonance, Q factor, bandwidth, phase, power factor, RMS voltage, frequency, and wavelength.

RLC Time Constant Calculator RLC Impedance Calculator RLC Resonant Frequency Calculator RLC Quality Factor Q Calculator RLC Bandwidth Calculator AC Phase Difference Calculator Power Factor Calculator Real Reactive Apparent Power Calculator RMS Voltage Calculator Peak to Peak Voltage Calculator Frequency to Period Calculator Wavelength Frequency Calculator Decibel dB Calculator dBm to Watt Converter

Power, Battery and Wiring

10 tools

Estimate power consumption, battery runtime, battery capacity, voltage drop, wire resistance, fuse size, heating, and regulator dissipation.

Power Consumption Calculator Battery Runtime Calculator Battery Capacity Calculator Linear Regulator Power Dissipation Calculator LED Resistor Calculator Wire Resistance Calculator Voltage Drop Calculator Fuse Size Calculator Joule Heating Calculator Transformer Turns Ratio Calculator

Semiconductors and Circuit Devices

6 tools

Design diode, Zener, LED, transistor, and biasing circuits with component-level electrical calculations.

Diode Forward Voltage Calculator Zener Diode Regulator Calculator Transistor Beta Gain Calculator Transistor Biasing Calculator LED Resistor Calculator Linear Regulator Power Dissipation Calculator

Physics Fields and Circuit Laws

5 tools

Use Kirchhoff laws, Coulomb law, electric field formulas, transformer ratios, and wave relationships.

Kirchhoff Law Calculator Coulomb Law Calculator Electric Field Calculator Transformer Turns Ratio Calculator Wavelength Frequency Calculator

Circuit and Control Simulators

10 tools

Simulate voltage dividers, Ohm's law, RC/RL/RLC circuits, filters, diode I-V curves, and PID controller response.

Voltage Divider Simulator Ohm's Law Simulator RC Circuit Simulator RL Circuit Simulator RLC Circuit Simulator Low Pass Filter Simulator High Pass Filter Simulator Band Pass Filter Simulator Diode I-V Curve Simulator PID Controller Simulator

What Can You Do With These Electronics Tools?

These calculators help analyze DC circuits, resistor networks, voltage dividers, capacitor and inductor behavior, RLC resonance, AC power, battery runtime, wire losses, semiconductor circuits, electric fields, and signal relationships. Simulator pages add visual support for filters, transients, I-V curves, and control response.

Frequently Asked Questions

What electronics calculators are available here?▼

This page includes Ohm's law, resistor, voltage divider, current divider, RC, RL, RLC, capacitor, inductor, AC power, battery, wiring, semiconductor, signal, field, and simulator tools.

Which circuit calculator should I start with?▼

For basic DC circuits, start with Ohm's Law, Resistor Series Parallel, Voltage Divider, or Current Divider tools. For transient circuits, use RC, RL, or RLC calculators and simulators.

Do these electronics tools show formulas?▼

Many tools include formulas, substitutions, circuit relationships, derived values, and step-by-step results so students and engineers can verify the calculation.

Are these electronics and physics tools free?▼

Yes. The calculators and simulators are free browser-based tools for electronics study, circuit design checks, physics practice, and engineering calculations.

Algebra Geometry Trigonometry Matrices Functions Number Theory Base Converter Electronics Statistics Life & Finance Simulators

Free online calculators and tools covering mathematics, unit conversion, text processing, and daily life. Accurate, fast, mobile-friendly, and completely free to use.

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