Everyday tools · NUMORA
Voltage Divider Calculator
Vout = Vin · R2/(R1+R2).
Open interactive calculatorHow to use
Vout = Vin · R2/(R1+R2).
FAQ
Is this Voltage Divider calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Vout = Vin · R2/(R1+R2).
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