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Online Calculator
Voltage divider calculator
Enter Vin, R₁, and R₂ to calculate the ideal output voltage of an unloaded voltage divider.
Ideal model with no load connected to the output.
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Local processing
The values are processed directly in your browser.
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Free
No registration, external API or subscription required.
Frequently asked questions
What is the voltage divider formula?
Vout = Vin × R₂ / (R₁ + R₂).
Where is Vout measured?
Across R₂, relative to the lower reference point.
Does the connected load affect the result?
Yes. This calculator uses the ideal no-load model.
Does it also calculate current?
Yes, it shows the ideal current that circulates through both resistances.