Abstract: The electronic speedometer of this invention accurately calculates and digitally displays a skier's instantaneous speed. The device accomplishes this task by employing the "hot wire" principle using a thermistor and a thermocouple which are exposed to air stream through which the skis move. The device does not contain any moving parts and does not contact the snow or rely on snow contact for its operation. Since the construction of the device minimizes drag, its effect on a skier's performance is negligible. The device can easily be mounted and removed from a ski without the use of tools and without damaging the ski, thereby making it easily transferable to other surfaces, such as snowboards and hangliders.