Voltage Divider Calculator

Calculate output voltage for a resistive voltage divider circuit. Find the right resistor values for your project.

Calculate output voltage for a resistive voltage divider

Input Voltage (V)

R1 (Ω)

R2 (Ω)

    Vin
     │
    [R1]
     │
     ├──── Vout
     │
    [R2]
     │
    GND

Formula

Vout = Vin × (R2 / (R1 + R2))