How do I Measure my Grip?
Hold the racket on edge, this will present you with the top panel as #1.
The grip has eight Panels one through eight. if you were to hold the racket with an Eastern forehand grip, which would present your base knuckle or your forefinger knuckle on panel three and the heel of your hand on panel two -bleeding over to panel three, your pinky finger of your left hand after gripping the racket would fit between your three bottom fingers in your hand and racket and that would tell you that you have the correct size grip. The three most common grip sizes are 4 3/8, 4 1/2 , 4 5/8 this indicates the size or handle of grip the racket was made with.