Voltage Divider Calculator

Calculate output voltage using resistor divider circuits instantly.

Calculate output voltage using two resistors.

Output Voltage: 0.000 V

 

How to Use

  • Enter input voltage (Vin)
  • Enter resistor values R1 and R2
  • Click CALCULATE to get output voltage

Voltage Divider Explanation

Formula: Vout = Vin × (R2 / (R1 + R2))

Vin: Input voltage

R1: First resistor

R2: Second resistor

Vout: Output voltage across R2

Voltage Divider Formula Table

Parameter Formula
Output Voltage Vout = Vin × (R2 / (R1 + R2))
Current I = Vin / (R1 + R2)

FAQs

What is a Voltage Divider?
A circuit that divides voltage using resistors.

Where is it used?
Arduino, sensors, signal conditioning.

Why use it?
To reduce voltage to safe levels.

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