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    Voltage Divider Calculator

    One of the most basic and common circuits is the two resistor voltage divider. The ratio of the resistors divides and input voltage down to a lower voltage. This calculator simplifies the task.

    Voltage Divider Circuit Schematic

    Voltage Divider Circuit Schematic

    Inputs:
    Input Voltage:
    Results:
    Output Voltage:
    Ratio (R1/R2):
    Fill in one of the parameters below and the other two will be computed.
    R1
    R2
    R1+R2

    See our standard resistor calculator for a real world resistor value.

    Equations:

    Vo= Vin*R2/(R1+R2)

    R2/R1= Vo/(Vin-Vo)

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