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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 (V_in), resistor R₁ value and resistor R₂ value the output voltage will be calculated;
If you specify output voltage (V_out), resistor R₁ value and resistor R₂ value the input voltage will be calculated;
If you specify input voltage (V_in), output voltage (V_out) and resistor R₁ value the resistor R₂ value will be calculated;
If you specify input voltage (V_in), output voltage (V_out) 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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11/27/2022

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Voltage Divider Calculator

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