Voltage Divider Calculator
How to design a voltage divider
- Choose whether to find the output voltage or the R2 value for a target output.
- Enter the input voltage and R1.
- Enter R2 or the target output voltage.
Frequently asked questions
What is the formula?
Vout = Vin × R2 / (R1 + R2). It holds when the load connected to the output draws much less current than the divider itself.
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