TENNIS RACKET GRIP SIZE GUIDE
USING A RACKET
Grip the handle as normal and then you should be able to fit your first finger from your other hand in the space between your fingers and your palm. If there isn't enough room for your index finger, the grip is too small. If there is space between your finger and palm, the grip is too big.
WITHOUT A RACKET
Hold your racket hand flat out in front of you with your fingers pushed together and your palm facing upwards.
There are three main creases on your palm. Measure from the middle crease on your palm up to the tip of your ring finger. This measurement will fall into one of the grip size categories below.
Grip size 1 = 4 1/8"
Grip size 2 = 4 1/4"
Grip size 3= 4 3/8"
Grip size 4 = 4 1/2"
Grip size 5 =4 5/8"
Increasing your existing racket's grip size:
It's easier to increase the grip size on most rackets whereas it is much more difficult to have the grip size reduced. If you find that you are between two grip sizes it is better to go with the smaller size and you can easily increase the grip size with an over wrap. A typical over wrap will increase a grip by 1/16 inch. You can also increase the grip size by using a heat-shrink sleeve. One heat shrink sleeve will increase the grip size by 1/8 inch. Both methods will increase overall racket weight slightly (7-16 grams) but the benefits of a correct grip size far outweigh the disadvantages of a small increase in weight.