Voltage Divider Calculator
Use this tool to calculate the output voltage of a resistor divider circuit for a given set of resistor values and source voltage.
What is a voltage divider?
A voltage divider is a passive linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (V1). Voltage dividers are used to make signal level adjustments, for active device and amplifier bias, and for measuring voltages.
Ohm's Law explains the relationship between voltage, current, and resistance by stating that the current through a conductor between two points is directly proportional to the potential difference across the two points.
A law is relating the voltage difference between two points, the electric current flowing between them, and the resistance of the path of the current. Mathematically, the law states that V = IR, where V is the voltage difference, I is the current in amperes, and R is the resistance in ohms. For a given voltage, higher resistance entails lower current flow.