In golf, “ball size” or “ball diameter” refers to the standard dimensions of a golf ball. The official regulations set by the governing bodies of golf, such as the United States Golf Association (USGA) and the Royal and Ancient Golf Club of St. Andrews (R&A), specify the acceptable size of a golf ball.

According to the rules, the standard size of a golf ball is defined as having a minimum diameter of 1.68 inches (42.67 millimeters). This size restriction ensures consistency and fairness in the game, as all players are required to use balls of the same size.

It's worth noting that golf balls can have variations in their construction, materials, and design, but the size remains constant. Golf ball manufacturers may incorporate various technologies to enhance the ball's performance, such as different dimple patterns for improved aerodynamics or softer covers for enhanced feel.

It's important for golfers to use golf balls that conform to the official size regulations to avoid any penalties or disqualification in tournament play. Checking the specifications of golf balls before using them in competitions can help ensure compliance with the rules.

Size of a Golf Ball (aka Diameter of a Golf Ball): The Rules of Golf state that a golf ball may be no less than 1.68 inches in diameter.