How Wide Is a Golf Hole? Official Size Explained

By Sarah Miller · March 10, 2035

The standard width of a golf hole is 4.25 inches (108 millimeters) in diameter, as defined by the Rules of Golf established by the USGA and The R&A.

Understanding the Standard Golf Hole Dimensions

Golf is a game of precision, and every aspect of the course is carefully regulated—including the size of the hole on the green. The official diameter of a golf hole is precisely 4.25 inches (108 mm). This measurement has been standardized globally since 1891 and is enforced by the United States Golf Association (USGA) and The R&A, the sport’s governing bodies.

Why Is the Golf Hole 4.25 Inches?

The 4.25-inch diameter was first adopted by St Andrews in Scotland and later formalized due to the widespread use of hole-cutting tools of that size. Despite anecdotal theories, the dimension was ultimately retained for consistency and fairness across all courses.

The hole must be at least 4 inches deep to ensure the ball drops below the surface.
A liner is often used to maintain shape and protect the turf.
The top edge must be smooth to prevent damage to the ball.

Regulations Governing Golf Hole Specifications

The Rules of Golf, jointly maintained by the USGA and The R&A, specify exact requirements for hole dimensions and placement. These rules ensure uniformity in professional and amateur play worldwide.

Key Rule Requirements

Diameter: Exactly 4.25 inches (no tolerance for smaller sizes).
Depth: Minimum 4 inches (101.6 mm), though deeper liners are common.
Location: Must be positioned at least four club lengths from the edge of the green and not on severe slopes.
Surface: Surrounding putting surface must be smooth and level.

Parameter	Standard Measurement	Governing Body	Rule Reference
Hole Diameter	4.25 inches (108 mm)	USGA & The R&A	Rule 3.2a
Minimum Depth	4 inches (101.6 mm)	USGA & The R&A	Rule 3.2a
Liner Depth	Typically 6–8 inches	Course Maintenance Standards	N/A
Distance from Green Edge	At least 4 club lengths (~20 feet)	USGA Course Setup Guidelines	Appendix B

Table data source:1, 2

The data confirms strict global standardization of golf hole dimensions. The 4.25-inch diameter and minimum depth requirements are uniformly applied in all sanctioned play, ensuring fair competition. Liner depth varies based on course maintenance practices but must not affect ball behavior.

Common Questions About Golf Hole Size

How wide is a regulation golf hole?

A regulation golf hole is exactly 4.25 inches (108 millimeters) in diameter, as mandated by the USGA and The R&A.

Has the size of a golf hole always been 4.25 inches?

Yes, since 1891, when the Royal and Ancient Golf Club of St Andrews adopted the 4.25-inch diameter, which later became the global standard.

What happens if a golf hole is damaged during play?

If the hole is damaged or displaced, it must be repaired or replaced immediately. In tournaments, officials may reposition the hole or use a new cup liner.

Can a golf hole be larger than 4.25 inches?

No, according to official rules, the hole must not exceed 4.25 inches. While some practice facilities may use larger holes for training, they are non-regulation.