Electronics Calculators
Practical calculators for electronics, embedded systems, RF, PCB design, power electronics and signal processing.
Popular Calculators
Start with commonly used electronics calculations.
Ohm's Law
Calculate voltage, current, resistance and power.
Voltage Divider
Calculate output voltage from resistor values.
LED Resistor
Calculate the resistor required for an LED.
Resistor Color Code
Find resistor value from color bands.
UART Baud Rate
Calculate UART baud rate and clock settings.
RF Wavelength
Calculate wavelength from frequency.
Calculator Categories
Select an engineering category.
Basic Electronics
Ohm's law, resistors, capacitors, power, batteries and more.
View Calculators → 02Embedded Systems
UART, SPI, I2C, PWM, ADC, timers and microcontrollers.
View Calculators → 03RF & Wireless
RF power, wavelength, link budget, VSWR and impedance.
View Calculators → 04PCB Design
Trace width, impedance, vias and PCB calculations.
View Calculators → 05Power Electronics
Buck, boost, MOSFET, transformer and thermal calculations.
View Calculators → 06Analog Electronics
Op amps, BJT, MOSFET, diode and amplifier calculations.
View Calculators → 07Digital Electronics
Binary, hexadecimal, logic and digital calculations.
View Calculators → 08Signal Processing
Sampling, FFT, RMS, SNR and frequency calculations.
View Calculators →All Calculators
Browse the available engineering tools.