Voltage Divider Calculator

How Does This Voltage Divider Calculator Work? Here is an Example Calculation:

Let’s say we have:

Input Voltage (Vin) = 12V

Resistor 1 (R1) = 2000Ω (2kΩ)

Resistor 2 (R2) = 1000Ω (1kΩ)

Using the formula:
Vout = (Vin × R2) ÷ (R1 + R2)

Step-by-step:

Multiply Vin by R2: 12V × 1000Ω = 12,000

Add R1 and R2: 2000Ω + 1000Ω = 3000Ω

Divide the results: 12,000 ÷ 3000 = 4

Result:
The output voltage (Vout) would be 4V

How it would look in the calculator:

Enter “12” in the Input Voltage (Vin) field

Enter “2000” in the Resistor 1 (R1) field (or “2” with kΩ selected)

Enter “1000” in the Resistor 2 (R2) field (or “1” with kΩ selected)

The calculator automatically displays “4.0000” in the Output Voltage (Vout) field

This shows how the voltage is divided from 12V down to 4V using the two resistors in series. The calculator would perform these calculations instantly when you enter any three values.