In this article, we will cover everything you need to know (and more) about golf ball sizes and advanced metrics for evaluating golf balls. Golf ball sizes are determined by the Rules of Golf and are regulated by the USGA and the R&A.

**Contents**hide

**How many dimples are on a golf ball?**

How many dimples are on a golf ball? This is a common concern among experienced and novice golfers alike.

It’s an obvious question, but the answer isn’t as straightforward. We’ll clarify that and provide you with all of the information you need about golf ball dimples in this section.

The truth is, there is not a single answer to how many dimples are on a golf ball. That’s because the number of dimples varies with each model and manufacturer. The most common number of dimples per golf ball is between 300 and 500.

The most popular golf ball, the Titleist Pro V1, has 352 dimples on it. This varies from the slightly different Pro V1x, which has 328 dimples.

## What is the diameter of a golf ball?

The diameter of a golf ball is 1.68 inches or 4.267 centimeters.

The rule is set by the United States Golf Association.

## What is the weight of a golf ball?

The weight of a golf ball cannot exceed 1.620 ounces or 45.93 grams. It also cannot be lighter than 1.560 ounces or 43.86 grams.

## What is the circumference of a golf ball?

The golf ball circumference is 5.277 inches or 13.405 centimeters.

This is a crucial rule that golf ball producers must follow because it must be able to fit on the hole with the flag pin in.

## What is the compression of a golf ball?

Golf ball compression is how much the ball deforms when hit by a club. It’s measured on a scale from 50 to 200 and compressed balls have a lower number.

A softer ball will have more give and grip the clubface better for more spin. Harder balls fly straighter and farther but don’t spin as much.

The most common compression for a recreational golf ball is 90.

## What is the Coefficient of Restitution of a golf ball?

The coefficient of restitution (COR) is the amount of energy a ball gives back to the club when hit. It’s measured on a scale from 0.800 to 1.000.

The COR of a golf ball must be 0.800 or less.

Illegal golf balls have a COR greater than 0.8, which means they’ve been altered and give the player an unfair advantage.

## What is the initial velocity of a golf ball?

The initial velocity of a golf ball is how fast it’s going when it’s first hit. It’s affected by the club, the angle of impact, and the spin rate.

The average initial velocity for a driver is 170 to 175 miles per hour (274 to 282 kilometers per hour).

## What is the spin rate of a golf ball?

Spin rate is how much the ball spins when hit. It’s affected by the club, the angle of impact, and the initial velocity.

The average spin rate for a driver is 2,700 to 3,200 rotations per minute.

## What is the angle of incidence of a golf ball?

The angle of incidence is the angle at which the ball hits the clubface. It’s affected by the club, the spin rate, and the initial velocity.

The average angle of incidence for a driver is four to five degrees.

## What is the Coefficient of Friction of a golf ball?

The coefficient of friction (CoF) is how much friction there is between the ball and the clubface. It’s affected by the type of club, the spin rate, and the initial velocity.

The average CoF for a driver is 0.24 to 0.28.