Voltage Divider Calculator
Find the output voltage of a two-resistor voltage divider circuit.
CALCULATE
--
Formulas
Vout = Vin × R2 / (R1 + R2)Vin = Input voltage, R1 = Top resistor, R2 = Bottom resistor, Vout = Output voltage
How a Voltage Divider Works
A voltage divider turns a large voltage into a smaller one using two resistors in series. Used in sensor circuits, level shifting, biasing transistors, and ADC reference voltages.
Important limitation
Only works accurately when load impedance is much higher than R2 (at least 10x). For power applications, use a voltage regulator instead.
Ad (728x90)