While several web sites have general guidelines for pole size based on a person's height, that method does not take into consideration that some people have long legs with short torsos, and some have long torsos with short legs. The best method to determine the appropriate pole length is to stand up while wearing shoes with arm parallel to the ground, make a fist, pinky down, thumb up. Measure the distance from the ground to the top of your fist. Add 2", to account for the tip that goes into the snow. For example, my ground to top-of-fist measurement is 47". Adding 2" makes 49". Multiply by 2.54 (for cm) and I get 124.5, so I buy a 125cm pole. Round down if you are in the middle (eg, 122.5 -> 120cm pole). If you are at a ski store you can do an empirical test with their pole stock. Turn a pole upside down, handle on the floor, tip up. Make a fist and grab the pole such that your fist is just under the basket. Have someone else observe if your forearm is parallel to the floor or if it angles up or down. Try different pole sizes until your forearm is parallel to the floor.