Voltage Divider Calculator

Voltage Divider Calculator is a simple easy-to-use tool that helps you evaluate the output voltage or resistors values in a single voltage divider according to Ohm's law. To calculate a particular parameter of a circuit (e.g. input voltage, output voltage, resistor R1 value or resistor R2 value) click on the corresponding parameter on the figure and then enter all the necessary values:

  • If you specify input voltage (Vin), resistor R1 value and resistor R2 value the output voltage will be calculated;
  • If you specify output voltage (Vout), resistor R1 value and resistor R2 value the input voltage will be calculated;
  • If you specify input voltage (Vin), output voltage (Vout) and resistor R1 value the resistor R2 value will be calculated;
  • If you specify input voltage (Vin), output voltage (Vout) and resistor R2 value the resistor R1 value will be calculated.

This tool also displays resistor color code and SMD (surface mount device) resistor code for calculated values.


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04/27/1990
date of creation
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