Potentiometer Calculator

Enter value and click on calculate. Result will be displayed.
R1(amps) :
R2(amps) :
Rl(amps) :
vs(volts) :
Result:
VL :

A Potentiometer Calculator is a tool used to determine the resistance values, voltage division, or output voltage of a potentiometer — an adjustable resistor often used for voltage control in electronic circuits.

  • What is it?
    A potentiometer calculator simplifies calculations related to a potentiometer’s behavior in a circuit. It helps determine:

    • Output voltage based on the position of the wiper.
    • Resistance between different terminals.
    • Current through the potentiometer.
    • Power dissipation across it.

  • Why use it?

    • Saves time: No need for manual calculations.
    • Reduces errors: Ensures accuracy in electronic circuit design.
    • Helps in design: Essential for setting up voltage dividers and tuning circuits.
    • Component selection: Helps choose the right potentiometer value for a specific voltage or resistance need.

  • How does it work?
    A typical potentiometer calculator takes inputs like:

    • Total resistance of the potentiometer (R_total).
    • Supply voltage (V_in).
    • Wiper position (percentage or physical position). Then it calculates:
    • Output voltage at the wiper (V_out):
    • Resistance between wiper and terminals. Some calculators also consider loading effects, current, and power dissipation.

  • When to use it?

    • Circuit design and prototyping: When setting voltage levels for sensors or inputs.
    • Calibration and tuning: Adjusting a device’s sensitivity or response.
    • Troubleshooting: Checking whether the potentiometer outputs the expected voltage.
    • Component testing: Verifying a potentiometer’s resistance and voltage behavior.