Pull-up & Pull-down Resistors Calculator

Resistors are current limiting devices with are used abundantly in electronics circuits and products. It is a passive component which provides resistance when current flow through it.

Pull-up and pull-down resistors are often used when interfacing a switch or some other input with a microcontroller or other digital gates. They are often used to provide a controlled current flow into a resistive sensor prior to analog to digital conversion of the sensor output voltage signal.

Pull-up Resistor

Pull-up resistors are resistors which are used to ensure that a wire is pulled to a high logical level in the absence of an input signal.

Please enter your values below.

Formula

R= V/I

Diagram View

pull-up resistor circuit

Pull-down Resistor

Pull-down resistors work in the same manner as pull-up resistors, except that they pull the pin to a logical low value. They are connected between ground and the appropriate pin on a device.

Please enter your values below.

Formula

R= V/I

Diagram View

pull-down resistor circuit