Voltage Divider Online Calculator
An interactive calculator to quickly determine the output voltage (Vout) of a classic two-resistor voltage divider given the input voltage (Vin), resistor R1, and resistor R2.
How It Works
The voltage divider formula is:
Vout = Vin × ( R2 / (R1 + R2 ) )
Simply enter your values below, and this calculator will instantly compute Vout.
Example Table of Common Resistor Values
This table provides example calculations for common resistor combinations:
| Vin (V) | R1 (Ω) | R2 (Ω) | Expected Vout (V) |
|---|---|---|---|
| 5 | 10k | 10k | 2.5 |
| 12 | 1k | 2k | 8 |
| 9 | 5k | 5k | 4.5 |
What is a Voltage Divider Online Calculator and How to Use It?
A Voltage Divider Online Calculator is a powerful tool designed to help engineers, electricians, and electronics enthusiasts easily determine the output voltage in a resistor-based voltage divider circuit. A voltage divider is a simple circuit that reduces a higher voltage to a lower voltage using two resistors in series. It is widely used in sensor circuits, reference voltage generation, and electronic circuit design.
How to Use the Voltage Divider Calculator
- Input the Supply Voltage (V_in): Enter the input voltage that will be divided.
- Enter Resistor Values (R1 & R2): Provide the resistance values in ohms (Ω).
- Calculate the Output Voltage (V_out): The calculator will instantly apply the voltage divider formula:
- Adjust for Load Effects (Optional): If needed, include a load resistance to see how it affects the output voltage.
- Analyze the Results: Use the calculated voltage to ensure compatibility with your circuit design.
This tool simplifies complex calculations and ensures accurate voltage scaling for various applications like sensor interfacing, signal processing, and low-power electronics.