Resistor Color Code Calculator
Identify resistance values for 4, 5, and 6-band resistors. Includes an interactive visual calculator, color code chart, formulas, and tolerance range details.
February 9, 2026
Electrical Circuits & Components
Professional online circuit calculators for electrical engineers. Easily calculate capacitance, inductance, filter resonance, and Ohm’s Law parameters. From capacitor energy to discharge timing, access precise tools to validate your component selections and circuit designs.
LED Resistor Calculator
Use our free LED resistor calculator to find the perfect resistor for your LED circuit. Get accurate values for single LEDs, multiple LEDs, and different power sources.
February 9, 2026
Voltage Divider Calculator
Easily calculate output voltage, resistance, or current for loaded and unloaded voltage dividers. Includes formulas, circuit diagrams, and common applications.
February 9, 2026
Ohm’s Law Calculator
Easily calculate voltage, current, resistance, and power with our Ohm’s Law calculator. Features a 12-formula power wheel and interactive VI relationship charts.
February 9, 2026
Capacitor Calculator
Use our All-in-One Capacitor Calculator to decode codes, calculate series/parallel values, RC time constants, and capacitive reactance with ease.
February 9, 2026
Resistor Calculator
Calculate total equivalent resistance for series and parallel circuits. Features interactive diagrams, step-by-step formulas, and worked electronics examples.
February 9, 2026
RLC Resonant Frequency Calculator
Calculate resonant frequency, Q factor, and bandwidth for series and parallel RLC circuits. Includes an interactive frequency response chart and core formulas.
February 9, 2026
Current Divider Calculator
Calculate how current splits between parallel resistors with our Current Divider Calculator. Get instant results, circuit diagrams, and real-time charts.
February 9, 2026
Temperature Conversion Calculator
A tool for converting between Celsius, Fahrenheit, and Kelvin.
February 9, 2026
Time Constant Calculator
Calculate RC and RL circuit time constants (τ) and 5τ values. Visualize charging and discharging curves with our interactive chart for electronics design.
February 9, 2026