Abstract: A preferred embodiment of the present invention comprises a pedometer having a housing, a weighted pendulum, a magnet and reed switch, a microprocessor, a LCD display, three push-bottons, a hinged door with a spring cam device that holds the door open and shut, and a replaceable belt hook. The entire unit is powered by an oversized lithium battery that has an expected life of seven years. A unique method of user calibration simplifies user input and provides maximum calibration accuracy regardless of operational or stride artifact variations.