BlueGraysArduino · ESP32 · Pico

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Voltage divider

Voltage Divider Calculator

Calculate Vout or find standard resistor pairs for the output you want; handy for ESP32 and Arduino analog inputs.

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More tools

Ohm's lawVoltage, current, power
LED resistorResistor by LED color
555 timerFrequency, duty cycle
Battery lifeIncluding sleep current
Op-amp gainInverting, non-inverting
Color code3–6 bands, both ways