European Grip size US Grip size in inches; 0 (L0 or G0) 4 inches: 1 (L1 or G1) 4 1/8 inches: ...
The letter G can be ignored as it is the number that refers to the actual grip size. Each unit ...
More Tennis Grip Size G2 images
A tennis racquet’s grip size measures the circumference or distance around the handle, including the pre-installed stock grip, ranging from 4 inches to 4 3/4 inches. There are eight available grip sizes within that range, which start at 3 7/8 inches or a size double zero and increase by 1/8 inch for each size up to 4 3/4 inches for a size six.
If you hold a grip and it feels too big or too small, it probably is. Grips are available in 4 even, 4-1/8, 1/4, 3/8, 1/2, and 5/8. Junior 26" racquets come in 4; 25" in 3-7/8. Grips are sometimes in G sizes. G1 is 4-1/8, G2 is 4-1/4 , etc. A little number (like 3) on the butt cap means this is a G3 or 4-3/8 grip. I have no idea what my grip size is; what do I do:
A typical overgrip will increase a grip by 1/16 inch. You can also increase grip size using a heat-shrink sleeve. One heat shrink sleeve will increase grip size by 1/8 inch. Both methods will increase overall racquet weight slightly (7-16 grams), but the benefits of a correct grip size far "outweigh" the disadvantages of this added mass.
Grip size is important part because if your grip is too big you are unable to get your hand round the racket and feel the ball properly. In general ladies should choose grip sizes L1 + L2. Men should pick, grip sizes L2 or L3 with a maximum of L4 for those of you with extra large hands!