Knowledge Base

What Is The Diameter Of A Golf Ball?

Golf is one of the most played sports in the world. While you don’t need to reach the physical fitness peaks found in other sports like soccer or basketball, golf is a great way to stay fit and have fun at the same time.

When it comes to the rules and techniques of golf, many people get confused. You may think you just need to pick up a club and ‘whack’ the ball into a small hole.

While this is as basic a description of golf as you will ever find, there are many rules and regulations in the sport of golf. This includes the size of the golf balls.

If you’re new to golf, you probably have many questions surrounding the sport. One common query is – what is the size of a golf ball?

Considering this is arguably the most important component in a game of golf, it is important to understand the size of the ball.

If you’re a regular golfer, you may swear that the golf balls are smaller on some days as they keep missing the hole. However, this is not the case.

In today’s article, we will be taking a closer look at the diameter of a golf ball. We will also discuss a few interesting facts about golf balls that you may have never heard before.

Quick Facts, the Size of a Golf Ball


1.68 inches (42.67 mm)


.83 inches (21.082 mm)


5.277 inches (13.405 cm)


46 grams (USGA reg.)

The Standard Diameter Of A Golf Ball

It may not be the most widely known fact but finding out the diameter of a golf ball can put you in good stead with your golfing buddies on the weekend.

If you’re new to golf or simply passionate about the game, you are probably curious about the rules surrounding the sport.

Just as it is important to know what clubs to use on the course, it’s also crucial to understand what size your golf balls are.

The USGA (United States Golfing Association) states that standard golf balls should be 1.68 inches in diameter or 42.67 mm.

While you’re more than welcome to get your tape measure out and measure every golf ball before a competition, it is not required.

Most reputable golf ball manufacturers are quite meticulous about the ball’s sizes and follow the strict rules of the sport.

Therefore, golf balls are almost always designed according to these stringent measurements.

Some of the most reputable golfing companies include:

  • Nike
  • Top Flight
  • Srixon
  • TaylorMade
  • Titleist

When you purchase golf balls from any of these brands, then you are guaranteed the correct and accepted diameter. Furthermore, you will be purchasing high-quality balls made from top-quality material.

A ball not in sync with the USGA standards, you may not be able to use them.

If you measure a golf ball and it is smaller, it could be because of its age. Golf balls manufactured before the 1980s required a diameter of at least 1.62 inches.

Without measuring, however, you probably won’t see any difference between older and newer golf balls.

“How Big is a Golf Ball in cm (centimeters)” by Top 10 Channel on YouTube.

Why 1.68 Inches?

You may be wondering why golf’s governing bodies decided on such a specific number. Well, the R&A and USGA decided on 1.68 inches because of performance regulations.

The USGA has long been known for making new golf rules and not adhering to the rules of a by-gone age.

Although the association has changed certain regulations over the years, it has always focused on maintaining the difficulty associated with playing golf.

Some other limitations that the USGA has introduced over the years include the depth of grooves on a club’s face and the ban of anchor putter techniques most recently.

Because of these regulations, golf balls can not be smaller than 1.68 inches in diameter. When it comes to the weight of a golf ball, this should be 1.62 ounces.

Having a limit on the weight tends to make more sense. If a golf ball is heavier or lighter than 1.62 ounces, it may travel further or not as far.

The heavier the ball, the further it may travel making golf an easier sport to play. On the other hand, the added weight may mean the ball will not travel as far.

Therefore, all golfers have the same weighted golf balls to make it as fair as possible.

They Did Things Differently In Europe

While the USGA regulates the sport of Golf in the U.S., the R&A (Royal and Ancient Golf Club of St Andrews) is responsible for rules and regulations in Europe. In this region, golf ball diameters were always 1.62 inches.

The reason for this .06 difference was down to the climate. On the whole, Europe is somewhat colder and windier than North America.

Therefore, the length of shots may be reduced to such environmental factors.

The Standard Diameter Of A Golf Ball

While .06 inches may not seem like much, some professional players such as the legendary Arnold Palmer saw noticeable changes in their performance levels when playing in European tournaments such as the Open Championship.

However, the USGA and R&A agreed to standardize the size of golf balls in the 1990s. This was when golf ball diameters became 1.68 inches throughout the world, regardless of weather conditions.

Are There Penalties For Not Using Standard Sized Golf Balls?

As with most sports, the rules of golf are pretty strict when it comes to tournaments and competitions.

If a player is found to be using a golf ball or any type of equipment that doesn’t meet the USGA standards, then they will face penalties.

More often than not, this will be in the form of disqualification. Even if you do not use some equipment in your golf bag, you could still face disqualification if it does not meet the necessary standards.

As well as disqualification, there are other possible penalties. These include 2-stroke penalties for every hole played.

Penalties For Not Using Standard Sized Golf Balls

This can lead to a maximum four-stroke penalty. That being said, these stringent rules are typically kept for competitive matches and tournaments.

If you play golf casually with friends at a local golf club, you shouldn’t have to worry about any disqualifications or penalties (unless your friends are VERY competitive).

Depending on your preference, it should be fine to choose between smaller or larger golf balls in casual games.

What Is The Radius Of A Golf Ball?

As well as the diameter of a golf ball, you should also understand the overall dimensions. One important factor is the radius of a golf ball.

Golf balls should have a radius of .83 inches. To figure out the radius of a golf ball, the diameter is divided into two.

This is because the radius is essentially one-half of the golf ball’s diameter.

What Is The Circumference Of A Golf Ball?

According to USHA regulations, a golf balls’ circumference should be 5.277 inches. This is approximately equal to 13.405 centimeters.

All golf ball manufacturers must adhere to this measurement so the ball can effectively fit in the hole.

What Is The Weight Of A Golf Ball?

The weight of a golf ball is critical as it has a significant impact on the outcome of each shot. If a ball is too light, the wind can easily push it of course.

If the wind is facing against the golf ball, it may not travel as far either.

On the other hand, if the wind is traveling in the same direction of the ball, it could carry it further giving players an unfair advantage over others who have heavier golf balls.

What Is The Weight Of A Golf Ball

If a golf ball is too heavy, a golfer will need to put more effort into their shots every time. Therefore, it may not travel as far, especially if the wind is against it.

For casual golfers, the weight of a golf ball is typically 45.93 grams. This is considered to be the sweet spot between light and heavy.

However, in tournaments, the USGA states that a golf ball must always weigh exactly 46 grams.

If you’re practicing for an upcoming tournament, you better get those weighing scales out!

Why Do Golf Balls Have Dimples?

One of the most distinguishable features of a golf ball is its dimples. Without these, golf balls just wouldn’t be golf balls.

But, these are not there for decoration. Dimples on golf balls are designed this way for a reason.

Generally speaking, these markings have a significant impact on the overall performance of each and every golf ball.

Flat objects tend to travel through the air at an inconsistent rate. They will fluctuate enormously and become very hard to control.

The solution? To add dimples, of course. These simple dents on the ball’s outer surface allow air to flow over a larger portion of the golf ball and help affect the spin and lift of the ball.

The average dimple of a golf ball has a depth of around .01 inches.

However, the specific circumference of these dimples varies from one manufacturer to another as, unlike the diameter, radius, circumference, and weight of a golf ball, there are no regulations regarding the size of dimples.

In Summary

As we come full swing to the end of this article, it is important to note that the strict rules around dimensions of golf balls usually only apply to tournaments and professional games.

If you’re playing casually with friends, you shouldn’t be worrying too much about the diameter, weight, and circumference of the balls you are using. Just enjoy!

Nevertheless, it’s useful to know that the diameter of a golf ball is 1.68 inches according to the regulations set out by the USGA.

This is one of many standards made for the game of golf such as club sizes and hole diameters.

While golf is fun both competitively and as a leisure activity, its many rules can be a little confusing for newbies.

However, these rules are in place for good reasons but they generally only affect professional golfers.

So, put that measuring tape down and just head out on the course with your friends. Just don’t forget to inform them of your newfound golf ball diameter knowledge!

Frequently Asked Questions about Golf ball size

What is the diameter of a golf ball?

The diameter of a golf ball is 1.68 inches, or 42.67 mm.

What is the radius of a golf ball?

The radius of a golf ball is 0.83 inches, or 21.082 mm.

How big is the circumference on a golf ball?

The circumference of a golf ball is 5.277 inches, or 13.405 cm.

How much does a golf ball weigh?

According to USGA regulation, a golf ball should weigh 46 grams if it is to be used in a tournament.

By Andrew Barrett

Hi, my name is Andrew Barrett, and I have been a keen golfer for the last 15 years. As a teenager, I used to attend my local golf club and resort with my father, and I quickly realized that it was the perfect sport for me. From here, I decided to take the sport more seriously, and have been playing regularly with family and friends since.

Over the years, I have picked up many useful skills and tips about golf. I have decided to set up my site, Golf Link, as a way to share my knowledge and tips with other keen golfers. Through this site, I will be talking you through general golfing knowledge, and I will also be reviewing golf clubs and equipment too.