You can figure out the ideal length for a putter at home with the help of another person. The process begins by getting into the normal putting position without a putter in hand and without making any adjustments. Then, hang your arms from your body in a natural position while another person measures the distance from the wrist to the ground. For most golfers, this distance will be between 32 and 36 inches and is the ideal shaft length for a putter.
Using this strategy accounts for posture and not just height when considering the ideal putter length. Having a putter that is the ideal length ensures your eyes see the right line as you set up the shot. If you see the incorrect line, you may unconsciously adjust your backswing and end up missing the shot. Shaft length also impacts distance control.

