Voltage Divider Calculator

📄 Voltage Divider Calculator – Explanation

The Voltage Divider Calculator helps you easily calculate the output voltage (Vout), source voltage (Vs), or the values of the resistors (R1 and R2) in a simple two-resistor voltage divider circuit.
It supports different resistance units (Ω, kΩ, MΩ) and works instantly as you enter values.

How it works:
A voltage divider reduces a larger voltage into a smaller one based on the ratio of two series resistors. It follows the standard formula: Vout=Vs×R2/(R1+R2)​​

Using the calculator:

  • Enter any three known values: Source Voltage (Vs), Resistance 1 (R1), Resistance 2 (R2), or Output Voltage (Vout).
  • The calculator will automatically compute the missing value.
  • You can select the resistance units (Ω, kΩ, MΩ) as needed.
  • All results are updated live as you type or change units.

Important Notes:

  • Ensure at least three fields are filled to calculate the fourth.
  • This calculator is ideal for quickly designing circuits involving sensors, signal scaling, or input protection stages.