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Voltage Divider Calculator

From input voltage and two resistors compute output Vout = Vin·R2/(R1+R2).

Input Data

Input Input voltage Vin.
V
Input Resistor R1.
Ω
Input Resistor R2.
Ω

Results

6V
Vout = Vin·R2/(R1+R2) = 6.000000 V

At a glance:Voltage Divider Calculator: enter parameters to compute results; complements related calculators.

Formula

Vout = Vin·R2 / (R1 + R2)

How to Use

  1. Enter Vin, R1, R2.
  2. Get output Vout.

Case Studies

Vin=12 V, R1=R2=1 kΩ

Vout = 12×1000/2000 = 6 V.

FAQ

No load?

Formula assumes open-circuit output.

With load?

Loaded divider needs parallel equivalent resistance.

Related Tools

References

Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Voltage Divider Calculator（/electric/voltage-divider）。