Voltage Divider Calculator
Calculate output voltage of a resistor voltage divider.
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How It Works
Calculate output voltage of a resistor voltage divider. Enter your values and press Calculate for instant results with a full formula breakdown.
Formula
Vout = Vin x R2/(R1+R2)Quick Reference
Common calculations — results you can verify instantly.
Vin=12V, R1=8kΩ, R2=4kΩ
12×4/12
Vout=4V
Vin=5V, R1=R2
5×0.5
Vout=2.5V
Vin=9V, R1=2kΩ, R2=1kΩ
9×1/3
Vout=3V
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