European Grip size US Grip size in inches; 0 (L0 or G0) 4 inches: 1 (L1 or G1) 4 1/8 inches: ...
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.
More Tennis Grip Size G2 images
The letter G can be ignored as it is the number that refers to the actual grip size. Each unit ...
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.
Grips. Additional weight: 4-8 grams; Change in Balance: Negligible; Half size shrink sleeve. Additional weight: 7-8 grams; Change in Balance: 1/8 to 3/8 inch (1-3 points), depending on racquet weight and length; Full grip size shrink sleeve. Additional weight: 14-16 grams; Change in Balance: 1/4 to 1/2 inch (2-4 points), depending on racquet weight and length