How Big is a Golf Ball – Golf Ball Diameter Explained

how big is a golf ball - golf ball diameter guide

I owe you all an apology. For years, I’ve been offering advice on the golf course without ever considering one crucial element: the size of the golf ball. How big is a golf ball, you ask? Well, I’m embarrassed to admit that I had to Google it myself. As a seasoned golf expert, I should know the answer off the top of my head. 

However, I found that even I was surprised to learn some interesting facts about the size of a golf ball, and I can’t wait to share them with you. Get ready to be surprised and amused!

How Big is a Golf Ball?

I am often asked about the dimensions of a golf ball. Well, let me tell you, a standard-size golf ball has a diameter of 1.680 inches. But that’s not all there is to know about the size of a golf ball. 

The size of the golf ball has been standardized by various golf associations worldwide, and its dimensions have evolved. Follow our analysis along with some history of how the size of the golf ball has changed.

What is the Diameter of a Golf Ball [+ Other Facts]

We know the basics, a standard-size golf ball has a diameter of 1.680 inches. This is the size that is used by professional golfers and in most golf tournaments. However, it’s important to note that other sizes of golf balls are used for specific purposes.

an image of a golf ball in the golfers hand

For example, some golfers prefer to use smaller golf balls, which can help with accuracy and provide a different feel when hitting the ball. These smaller balls typically have a diameter of 1.620 inches and are known as “British balls.” On the other hand, larger golf balls, known as “Oversized balls,” have a diameter of 1.730 inches and are primarily used by beginner golfers.

To better understand the different specifications of golf balls, let’s take a look at the following table:

Golf Ball Diameter Specifications
Type of BallGolf Ball Size in inchesGolf Ball Size in cm

Note: You must know that these different types of golf ball costs vary and must be used as per your practice requirements. Make sure you only use the standard and official golf balls with perfect size regulations in competitive play. 

Golf Ball Size History (From American to British)

The size of the golf ball has been a contentious issue for over a century. In the early days of golf, there were no fixed standards for the size of golf balls, and balls of various sizes and weights were used. Here’s a table outlining how the size of golf balls has evolved:

Early Golf Ball Sizes
17th CenturyGolf balls made from boiled feathers and leather, known as the feathery, come into use. The ball is handcrafted and varies in size and weight.
1848The gutta-percha ball made from the sap of tropical trees became popular. This ball is initially seamless and prone to cracking, but later versions are molded and painted.
Differences Emerge Between USGA and The R&A Rules
The Early 1900sThe USGA thinks about the 1.68-inch (42.67mm) golf ball diameter.
Early-Mid 1900sThe R&A works towards the rules of the 1.62-inch (40.64mm) diameter of a golf ball.
1952The R&A rules require a minimum diameter of 1.62 inches (41.15mm) for a golf ball, while the USGA allows a minimum diameter of 1.68 inches (42.67mm).
Debates Over Golf Ball Size
1970The USGA and The R&A propose a standardized diameter of a golf ball as 1.66 inches (42.16mm).
1973The proposal for a standardized size of the golf ball is withdrawn due to opposition from professional tours and manufacturers.
1974The R&A makes the larger 1.68-inch (42.67mm) ball mandatory in the Open Championship.
1980sPlayers using smaller golf balls in The R&A’s Open Championships are at a disadvantage.
1990The R&A outlaws the smaller golf ball and standardizes the minimum diameter of a golf ball to 1.68 inches (42.67mm).

By understanding the evolution of these events, we can appreciate how much effort has gone into creating a consistent ball size in golf & so is the case with golf ball numbers. Follow our insights on the history of golf ball numbers to know more. 

an image of the ancient golf balls

The size of the golf ball may seem small, but it has a significant impact on the way the ball travels through the air. As a professional golfer, I appreciate these historical efforts to standardize the game, giving players a fair chance to show their skills on the course.

Recommended Guide: What is the Four-Ball Golf Format

Golf Ball Size Regulations

I know how important it is to follow golf ball-related size regulations. These rules ensure that the ball is the correct size and weight for a fair game. Here are all the details you need to know about related to the ball size regulations:

  • The golf ball’s diameter must be at least 1.680 inches (42.67mm). This ensures the ball is not too small or too large to play.
  • The weight of the ball must not be greater than 1.620 ounces avoirdupois (45.93 g). This ensures that all players are using the same weight of the ball.
  • The golf ball radius is half of the diameter of a golf ball, which is equal to 0.840 inches (21.34mm).
  • The volume of the ball is approximately 2.5 cubic inches (40.8 cubic cm). This volume is calculated by multiplying the cube of the diameter by π (Pi) and then dividing by 6.
  • Finally, the circumference of a golf ball is approximately 5.27 inches (134mm). This measurement helps confirm the ball is the correct size.

Check out the table below for a quick overview of the key specifications:

Diameter1.680 inches (42.67mm)
Weight1.620 ounces (45.93 grams)
Radius0.840 inches (21.34mm)
Volume2.5 cubic inches (40.8 cubic cm)
Circumference5.27 inches (134mm)

Are All Golf Balls the Same Size?

So, “Are all golf balls the same size?” The short answer is no. Golf balls can differ in size, and there are various factors to consider when selecting the right one for your game. In this post, we’ll dive into the differences between a 2-piece, 3-piece, and multi-layer golf ball, and how they can impact the size of the golf ball. 

an image of golf balls on the ground

2 Piece Vs 3 Piece Vs Multi-Layer Golf Ball Size

When I first started playing golf, I didn’t realize that there were different types of golf balls, let alone that they could vary in size. However, after experimenting with different balls, I quickly understood how the right ball could impact my game. 

First, let’s explore the differences between 2-piece, 3-piece, and multi-layer golf balls. The biggest difference between these types of balls is the construction and the number of layers they have.

  • A 2-piece ball is made of a solid rubber core with a hard outer layer
  • A 3-piece ball has an additional layer between the core and outer layer. 
  • Multi-layer balls can have up to 5 layers, each with a different purpose (such as distance, spin, or control).

As I became a more seasoned player, I found that using a 3-piece golf ball allowed me to have more control around the green, while still maintaining distance off the tee. 

Furthermore, I learned that golf balls within multi-layer constructions can have different benefits. For example, a multi-layer ball with a more substantial outer layer can provide more spin, allowing me to stop the ball quicker on approach shots. 

But how do these different types of golf balls impact size? Let’s take a look at the table below.

Golf Ball TypeAverage Diameter (inches)
2 Piece1.68
3 Piece1.68

As you can see, for the most part, golf balls are the same size regardless of the type. However, multi-layer golf balls can vary in size, with some measuring up to 1.73 inches in diameter. It’s essential to check with your local golf course to ensure that the golf balls you plan to use are within regulation size.

Are Golf Ball Dimensions Important to Your Game?

I can attest to the fact that the dimensions of a golf ball can make a significant difference in your game. The golf ball’s weight, size, and dimple pattern can all impact the ball’s trajectory and distance traveled.

The standard size for a golf ball is 1.68 inches in diameter, with a weight of 45.93 grams. However, some golfers prefer a slightly smaller or larger ball, as it can affect their level of control and distance.

The dimple pattern on a golf ball also plays a role in its performance. More dimples can create more lift on the ball, influencing aerodynamics and allowing it to travel further. The depth and shape of the dimples can also affect the spin and trajectory of the ball.

Overall, it’s important to choose a golf ball with dimensions that suit your playing style and skill level. Experimenting with different sizes and dimple patterns can lead to improved performance on the course.

Small But Mighty: The Importance of a Golf Ball’s Size

So, after all that discussion, we can now confidently answer the question: “How big is a golf ball?” Well, the answer is relatively simple- a standard golf ball is 1.68 inches (4.268 centimeters) in diameter. But don’t let the small size fool you- there’s a lot packed into that little ball, and its composition can make all the difference in your game. 

Speaking of composition, do you know what golf balls are made of? Well, it varies depending on the manufacturer, but the majority are made of a rubber core and a two-layer cover of plastic and ionomer resin.

A golf ball may be small in size, but its importance in the game of golf cannot be overstated. Properly choosing and using the right ball can make or break your game. So, as always, keep practicing and experimenting with different golf balls to find what works best for you. And, if you need any more golfing tips or advice, stay tuned to Golf Ace Nation. Happy Golfing! 

Frequently Asked Questions

Q. How many cm is a golf ball?

The golf ball’s width or diameter in cm is around 4.27 centimeters, according to the United States Golf Association. This site has been standardized since the early 20th century for consistent play in golf tournaments and matches worldwide. While it may seem like a small measurement, the size of a golf ball plays a significant role in the game. 

Q. How many mm is a golf ball?

A standard golf ball usually has a diameter of 42.7 mm or 1.68 inches. This size is regulated by the United States Golf Association and the R&A. Although there are some variations in golf ball sizes, primarily used for younger players, the official size is consistent across all professional and amateur levels of the sport. 

Q. What are the acceptable diameters for the golf balls?

The golf ball’s diameter plays a crucial role in the game. The official rule book of golf states that the acceptable diameter for a golf ball is 1.68 inches or 42.67 mm. This standard size is to ensure that all players have an equal chance of success on the course. Any ball that exceeds this diameter limit is considered illegal and cannot be used during a game. 

Q. Is the diameter of a golf ball approximately 2 inches?

Yes, the diameter or width of a golf ball is roughly 1.68 inches, which is slightly smaller than 2 inches. This size is regulated by golfing organizations such as the United States Golf Association to ensure fairness in tournaments and competitions. The weight, shape, and size of the golf ball, all play a role in its performance, with the diameter affecting the aerodynamics of its flight.

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