Voltage Divider Calculator

Calculate output voltage, current, and power in voltage divider circuits. Supports multiple resistor configurations and provides detailed analysis.

Calculator

Calculation Results

Output Voltage
6.000 V
Current
6.000 mA
Voltage Ratio
50.0%
Efficiency
50.0%
Total Power
0.072 W
Total Resistance
2,000 Ω

Power Dissipation

R1 Power
0.036 W
R2 Power
0.036 W
Total Power
0.072 W

Circuit Diagram

Vin (12V)
┌─── R1 (1000Ω) ───┐
└─── R2 (1000Ω) ───┘
Vout = 6.000V

Frequently Asked Questions

What is a voltage divider?

A voltage divider is a simple circuit that produces an output voltage that is a fraction of its input voltage. It consists of two or more resistors connected in series.

How do I calculate the output voltage?

The output voltage is calculated using the formula: Vout = Vin × (R2 / (R1 + R2)), where R1 is the upper resistor and R2 is the lower resistor.

What are common applications of voltage dividers?

Voltage dividers are used in sensor circuits, reference voltage generation, level shifting, and as part of more complex electronic circuits.

How do I choose resistor values?

Choose resistor values that provide the desired voltage ratio while considering power dissipation, current draw, and tolerance requirements.