Passives Calculators & Tools

Parallel Resistance Calculator

Calculate the total resistance of resistors in parallel with ease!

Capacitor Charge and Time Constant Calculator

This calculator computes for the capacitor charge time and energy, given the supply voltage and the added series...

Ohm’s Law Calculator

Calculate circuit parameters using Ohm's Law

Resistor Color Code Calculator and Chart (4-band, 5-band or 6-band)

A handy tool for reading resistor color code values

Inductance, Reactance, and Admittance Calculator

This calculator gives the reactance and admittance of an inductor or the inductance given the reactance of an inductor

LED Resistor Calculator

An LED resistance calculator is perfect for when you have a single LED and need to know which resistor you should use.

Convert MCD to Lumens

This calculator is useful for calculating the luminous flux for LEDs where the angle is known.

Voltage Divider Calculator

The voltage divider is a circuit used to create a voltage less than or equal to the input voltage.

Coil Inductance Calculator

This calculator helps you compute the inductance of a coil.

Resistance Calculator

This calculator calculates the resistivity of a component based on its resistance value, length, and cross-sectional...

Rectangle Loop Inductance Calculator

This calculator helps you compute the inductance of a rectangle loop.

Capacitance Calculator

This calculates the capacitance of a capacitor based on its charge, Q, and its voltage, V, according to the formula,...

Capacitor Impedance Calculator

This tool calculates a capacitor's reactance for a given capacitance value and signal frequency.