How Much Does A Baseball Weigh? Best Guide In 2023

It is a question commonly heard in a quiz and answered by baseball fanatics… how much does a baseball weigh?

The answer is that it weighs between 5 and 525 oz, or 142 and 149 grams

Made from cork and rubber core and tightly wrapped yarn, two tight-fitting pieces of white leather are sewn together to make these iconic balls

So, how did it come to be what it is today, and how has humble baseball evolved throughout time?

Baseballs have evolved over time: from the size of a golf ball in the mid-19th century to the current standard size and weight of 9-925 inches in circumference and 5-525 ounces for Major League Baseball

The anatomy of a baseball is made up of cork, wool yarn, rubber, and cowhide leather

The materials used in modern baseball are synthetic and natural materials that are designed to be more durable, aerodynamic, and resistant to moisture

The size and weight of a baseball can affect its trajectory when pitched or hit, as well as how far it travels

Variations in size due to temperature or altitude can also affect how a ball behaves during gameplay

World War II Cork BallWhat is a baseball made of on the inside?How are baseballs made?

What are they made of?FAQHow much does a little league baseball weigh?How much does an MLB ball weigh?How much does a weighted baseball weigh?What is the average life of a baseball?

As with any ball game, baseball has gone through many changes throughout time, mirroring the changing demands of a sport that has been labeled as America’s favorite pastime for a reason

With this in mind, let’s look at how baseball itself has changed throughout the years

The National League was established in 1876, and the first balls with cores of rubber were designed

Before this time, balls were manufactured inconsistently, so they could have different weights

AG Spalding designed the first official league ball, and the resulting company would supply the balls for a century

In 1910, a new ball with a cork core was introduced during the Fall Classic

Fast forward to 1920, and rule changes meant the ball would no longer be played for an entire game unless it unraveled (dirty balls made it hard for batsmen to see)

It marked the start of the live-ball era, where spitballing was no longer allowed, and balls were replaced when they were dirty, soft, or soiled

Spalding introduced Australian wool, changing the yarn to make it easier for batters to hit home runs

The ball manufacturing process was standardized in this era, and the weight of a baseball was set at three ⅛ oz

World War II impacted the amount of rubber available, and baseballs were not as important as ammunition needed for the war effort

During this time, baseballs were manufactured with cork instead

Baseballs continued to change at this time, and in 1944, synthetic rubber was starting to become mass-produced, and balls were once again made to pre-war specs

In the modern game, baseballs are made of cork inside

They are covered in rubber and wound tight with yarn, then covered with alum leather

Post-war, horsehide was replaced with cowhide on the exterior, so these balls have gone through a lot of change over time

A baseball combines multiple layers: rubber, fabric, and cowhide

First, the rubber is molded, the fabric is wound around the rubber, and the cowhide is sewn into place, leaving a perfectly formed ball

Baseballs are mass-produced – with nearly a million used in MLB each season alone, this is hardly surprising

They are made of three parts, round cushioned cork inside, wool windings, and cowhide

This is to accommodate the younger pitchers’ strength and increase safety with a lighter ball

A Baden Level-5 Safety Baseball may be used for the smaller kids and has a poly center to give it a lighter feel

Then, a ball such as the Rawlings Ripken Baseball can be used for second grade

How much does an MLB ball weigh?

An MLB baseball weighs between 5 and 525 oz

They are made to be consistent, from cork and rubber at the corn, wound in yarn to keep it compact

Balls are machine-made and are supposed to be 5 oz, but there is a little leeway given as they can weigh a little more

How much does a weighted baseball weigh?

Weighted baseballs are used to build arm strength, improve the hitting of the batman, and enhance agility and speed

They weigh different amounts depending on the preference of the hitter or pitcher

Weighted baseballs have been used to increase throwing speed and stability and even lower injury rates, so it is no surprise that pitchers also use them

At the beginning of the game, a team must provide 90 new baseballs

On average, 60 to 70 balls are used, although, as mentioned earlier, this can go up to 120

The average use of an MLB baseball is six pitches, so these figures tend to make sense

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Have you ever wondered, how much does a baseball weigh?

Indeed, being an indispensable part of baseball games, its weight is also factored into how the game is played as well as how the players practice their catching and batting skills

According to official regulation, the weight of a baseball ranges from 5 to 525 ounces

Read on to see what determines the sizes and weight of the ball and more

Table of ContentsHow Heavy Does a Baseball Weigh?1

Leather and synthetic leather balls History of the Baseball

Today’s baseballBaseball Design and DimensionsFrequently Asked Questions (FAQs) Conclusion

How Heavy Does a Baseball Weigh?

Baseball is a sport of bat and ball

That’s why the construction of the baseball bat and ball and the forces between them are critical to the sport

The official baseball weight, therefore, is the result of thorough calculation and modifications

Furthermore, there will be slight differences in game balls used in high school baseball, minor leagues, and MLB games

Now, in official games, the average weight of a baseball is 5 ounces to 525 ounces

It means the baseball weight in grams is 142 to 149 (or 0142 – 0149 kg)

If we compare a baseball to a softball, a softball weigh more at 625 to 7 ounces

For younger players, the balls are made to be lightweight, significantly more than the standard ones used in professional leagues like MLB or the national leagues

These soft compression balls weigh around 42 ounces (119 grams), as they are made of sponge rubber

We can see this type of ball in Little League or games for amateur players

Another lighter ball for Little League baseball is the low-compression one, measuring around 46 ounces (130 grams)

As you throw the ball, you can feel how squishier and lighter it is, compared to major league baseball and college baseball

4 Leather and synthetic leather balls

Unlike lightweight rubber baseballs, leather balls weigh a bit more, as these materials are more heavy-duty

Genuine leather baseball measures around 5 ounces, while synthetic leather balls might weigh approximately 51 ounces

Therefore, they are basically the same weight as standard baseballs

In the course of more than two decades of baseball history, the balls and their raw materials have undergone major transformations to become the official ones we know today

Here are some significant periods in the evolution of the ball manufacturing process and the constructions used

Modern baseball for the MLB is produced by Rawlings using a standardized manufacturing process

However, in the early days of the sport, pitchers fashioned their own balls

During the “Lemon Peel Ball” period, the majority of baseballs had a core composed of melted yarn and leather of old shoes or fish eyes

In addition, these balls were small, dark brown, and had four rows of stitches

Fast forward fifty years to the 1850s, standardizing baseballs became an essential goal for teams in New York

The conventional baseball at the time had a circumference of 8 to 11 inches and a weight of 55 to 6 ounces

However, there were still many types of baseballs that offered distinct feels and speed due to differences in the hand-made process and materials

Live balls – Because they contained more rubber and had a tighter winding, players could throw live balls over a longer distance

Dead balls, on the other hand, had worse aerodynamics

Figure-8 baseballs are also known as modern-style baseballs because the stitches are lined up to form the number 8

These balls were mass-produced by William Harwood’s facility, America’s first baseball manufacturing factory

In 1910, the cork-core ball era began

The cork-core ball was tougher, so a baseball player could hit it harder

This resulted in higher batting averages and the live ball area starting, effectively ending the dead ball period with low hits and scores

Then, Australian wool was utilized to create baseballs in 1920, combined with machine winders for a tighter wrap

However, this Australian yarn ball made little difference in the game

In 1925, a baseball featuring a cushioned cork core and both black rubber and red rubber coverings was produced

The core is cushioned cork

One covering layer of rubber cement coating

Due to the fact that cork and rubber were not common materials during World War II, balata, a rubber-like material, was utilized for baseball in 1943

While the baseball’s basic design has remained the same, cowhide has been introduced as an alternative to horsehide in 1974

Since that year, there hasn’t been a major change in the design of new balls

As you already know, a MLB baseball weigh 5 ounces to 525 ounces, and is produced by Rawlings

The baseball design includes a core, covering layers made of leather and wool, along with hand-stitched red threads

The core or the baseball base weigh around 05 ounces, equivalent to 14 grams

The black and red rubber layers that reinforce the ball measures 0875 ounces (about 25 grams)

Then, the outer layers, including the wool yarn, the cowhide or horsehide, rubber coating, and 216 red stitches, make up the rest of the weight, about 362 ounces (or 103 grams)

The official baseball diameter is 9 inches to 925 inches, which translates to 229 to 235 cm)

The lifespan of a game ball is only seven pitches, and occasionally even six pitches

The ball is discarded and a new one used whenever it makes contact with the ground or a bat

A typical MLB game will employ between 84 and 120 baseballs

The outer layer of the baseball made of red threads are called stitches

So, for measuring the baseball weight, 5 ounces to pounds will be 03125, which is the exact weight of the baseball

Now, you know that a Major League Baseball weighs around 5 to 525 ounces and that MLB baseballs differ from soft baseballs used in little league and high school baseball

Furthermore, the new ball today has experienced multiple changes, from the live ball era and the early dead ball era, to the introduction of the revolving machine and mass production

There are indeed many fun facts derived from a simple question, “how much does a baseball weigh?

As a big fan of baseball, you surely get much information about its rules, techniques, and greatest baseball players of all time

But, Have you ever learned about the history of baseball, or got in mind the question: “How much does a baseball weigh?”

Well, the weight and size of a baseball are not standardized

Sometimes whether a ball used by kids or adults can also have an impact on its weight

According to the official MLB rules, a baseball used in the Major Leagues needs to weigh from 5 to 5 1⁄4 ounces (142 and 149 g)

On average, a baseball of the little players weighs between 4 and 5 ounces

What Are Official Specifications for an MLB Baseball?

MLB baseballs, produced by Rawlings in Costa Rica, comprise a rubber-coated cork center that is wrapped in thick layers of yarn

The exterior shell of the ball is made of cowhide or horsehide with 108 double stitches surrounded

Though much effort has been put in automating the manufacturing process of baseballs, it unfortunately failed

It’s worth noting that the materials used to make yarn and patterns have an effect on the ball aerodynamics

It’s true that there are various materials used to construct a single baseball

Wonder what Baseballs look like during its evolutions?

Learn about the actual history of baseball, from its inception over one hundred years ago to its current form

Since the inception of the game in the mid-1800s, Baseballs have gone through four main evolutions (The dead-ball era, The live-ball era, World War II, After World War II – today)

Baseball lore said that Ellis Drake, the son of a shoemaker, was the very first one to introduce the design for a baseball that would probably look quite similar to the baseballs used today

Dead Ball Era – How Much Does a Baseball Weigh?

In the early Dead Ball era, baseballs were crafted in a variety of materials often by pitchers, so they were literally different in weight and size

In 1876, when the National League was established, a pitcher named AG Spalding designed the ball whose center has a core of rubber

The National League approved the use of his baseball in the official league

Before changes to the game rules in 1920, an entire game would often use the same ball, even after a four-ball or home run

Thus, the ball would get dirtier, making it difficult to see

Plus, as the game progressed, the physical wear on the ball resulted in the reduction of its elastic properties, preventing players from hitting for distance

According to Baseball-Referencecom, there was an average of 394 runs, and 013 home runs per game scored from 1901 to 1910

During the 1910 Fall Classic, the league then officially introduced a new ball with a cork core instead of a rubber

Live Ball Era began in 1920, the year Mr Spalding used Australian wool to make the yarn, which wraps the baseball cores

The new ball suddenly threw the balance into the favor of batters

After the introduction of the Australian yarn ball, seasons experienced a small increase in hits, home runs, and a general trend towards a more offensive game

Also in this year, new rules outlawed spitballing were put into place, thus working against pitchers, and balls began to be replaced in games once they became dirtier, softer, and lost their toughness throughout the game

In 1934, the American and National Leagues standardized the manufacturing process for a ball

The ball has a cushion cork core surrounded by a layer of black rubber and a layer of red rubber

The yarn was then added with 71 yards of blue-gray woolen, contributing to the ball’s circumference of 7 3/4 inches and the weight to 3 1/8 ounces

The next wrapping was 41 yards of white, adding the circumference to 8 1/4 inches and the weight to 3 7/8 ounces

What was even more interesting is the tanned horsehide cover, which weighs 1/3 ounce and 5/100 of an inch thick

The size of a finished ball was not different from the one used in modern days, varying from 5 ounces to five and one-eighths ounces

Everyone knows that a fair number of talented players had to leave Major League Baseball to join the military in World War II, right?

Rubber was an essential material to make a baseball, but because of the war, America suffered from a shortage of rubber

Besides, as rubber is a necessary ingredient in arms and ammunition, rubber was limited to all things that were unnecessary to the war, which included baseballs

A baseball in wartime didn’t have a high-grade cork core and rubber mixture, but a granulated cork core instead

Two shells wrapping the core were made of a rubber-like substance called “balata”

There were continuous changes to the ball as the 1943 season took place

By 1944, the States was mass-producing synthetic rubber, and plenty of it was used for making baseballs and baseball was back to how it looked like before

Post World War II – Nowadays

Since then, there have been little changes ​to baseball

The core of League baseballs was made of cork mixed with a small amount of rubber, hugged by a layer of black rubber

The outer shell was red rubber

The use of this ball does well to home runs (10 30-homer guys in 1929 and 1930)

However, paying the most attention to the contribution of the ball alone caused the denial of the popularity of home run hitters

the exterior shell of horsehide was replaced with cowhide

The core of today’s standardized ball kept unchanged, containing a cushioned cork, wrapped with two rubber layers

However, there were some changes to the little league baseball weight and size

While the circumference of the old balls varied from 9 to 9 1/8 inches and the weight was 5 to 5 1/8 ounces, the balls used today could be thicker and heavier

It is worth noting that Major League Baseball ended its contract with Spalding in 1976

All baseballs in modern days are produced by the Rawlings Company

The First Steps in Creating the Ball

The process of making baseballs begins with a rubber cork core that is surrounded by a layer of black rubber and then red rubber

This stage is done in a temperature-controlled room to prevent the rubber from sweating or changing the complexity of real baseballs

The addition of various yarn versions to the ball raises its weight to 4 ounces

The next step is rubber cementing the horsehide to the yarn and rubber base of the ball

Eventually, bright red double stitches (108 stitches) are added to the ball, and the finished ball must weigh from five to five and a quarter ounces

Major League baseballs are exclusively manufactured by Rawlings, an American sports equipment company based in Town and Country

Well, the size and weight of baseballs probably remain unchanged in the foreseeable future

If any, changes may be expected in the process of making baseballs

There may have some possible controversy about the increasing use of juiced-up balls as long as the game of baseball is played and fans seek an explanation for fluctuations in the home run results

Which Weighted Baseball is Best?

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Have you ever picked up a baseball and wondered how much it weighs?

Or maybe you’re curious whether it has the same weight as one of those smaller training balls

The baseball weighs approximately around 143-145 grams

So, In this blog post, we’ll take a look at how much does a baseball weigh?

So, How Much Does A Baseball Weigh?

A baseball weighs between 142 and 149 grams depending on the make and model of the ball

Regulation balls weigh approximately 143 to 145 grams (5-525 ounces), whereas a slightly lighter training ball may only weigh 131 to 141 grams

The first thing we did was break down the weight data from a sample of balls with the help of a weighing machine

Although we found many exceptions to this rule, as you can see in the chart below, there tends to be a slight increase in ball weight as time goes on

Beginning shortly before 1950 and continuing into the 2000s, it appears that baseball manufacturers have been producing slightly heavier balls

You can see this increase in the chart below where the average weight has increased over time

To comprehend the design of a baseball, we must go back in time

From the early days of dead-ball baseball to the current era of live-ball baseball, World War II, and eventually modern baseball

In addition, we must comprehend the uniform manufacturing method used to create today’s baseballs

Dead Ball Era

Dead Ball Era

Dead Ball Era

The first official baseball game was played in New York on June 19, 1846

Referred to as the “New York game”, this game used a ball that weighed about five ounces and was made of rubber cores stuffed with yarn and covered with yellow leather

It wasn’t until 1857 that the modern baseball design came into play

The Spalding company, which is still around today and makes a variety of sports equipment and also first to design and produce modern baseball till today

It’s quite clear that this ball underwent many changes over time as manufacturers were constantly tinkering with aspects such as rubber cores, yarn coverings, and seams

Although it’s easy to see that the ball has evolved over the years, many sources describe it as having more of a square shape than today’s more rounded design

Live Ball Era

Live Ball Era

Live Ball Era

Live Ball Era

Starting in 1920, the materials used in baseball began to change over time

Although their name is not well-known today, they were very successful at the time and had contracts with many professional leagues including the National League and the American League

In 1920, Reach started using a two-piece cork and rubber core, instead of a solid rubber core from Spalding

This new design proved to be more effective at entrapping the air within the ball which increased flight distance when hit

It was during this time that home runs were breaking records and fans flocked by the thousands to watch games

The dead-ball era ended abruptly around 1920 when Babe Ruth hit 54 home runs, which shattered his previous record of 29

Following were 71 yards of Australian wool yarn, which was blue-grey in hue

The ball’s diameter was 7¾ inches and 3⅛ ounces, for a total weight of 9 ounces

The circumference was 27 inches and the factory-sealed stitching ring measured 1⅝ inch

American manufacturing companies such as Reach and Spalding were using many types of leather to create baseballs including cowhide, pigskin, kangaroo hide, etc

A ball could be made differently by using a certain type of leather

The baseball was slightly smaller than today’s ball at 7-725 inches in circumference and 9 ounces in weight

Then came 41 yards of white Australian wool yarn, which increased the diameter to 8⅜ inches and 313 pounds

World War II ERA

In 1941, the two-piece cork and rubber ball were replaced by a solid rubber ball

This new design was implemented to lower costs of production after World War II which started in December 1941

After World War II, there were many significant changes happening in both baseball equipment and baseball manufacturing

The use of leather in baseball gloves was replaced by the now-ubiquitous plastic, first developed during the war for making gun turret sights

Another significant change was taking place in terms of baseball manufacturing that had a direct effect on ball weight

Post World War II – Modern-day Era

Starting in 1960, Reach replaced the beaver felt outer covering with a paraffin-treated cowhide

Although not much is known about this specific change, it was most likely due to Spalding buying out Reach and taking over the production of baseballs

In 1975, Major League Baseball decided that balls would be replaced even if they were not hit into the stands

The game continued because the umpire ruled home run based on the judgement of no rule was made at that time

A new ball design was introduced for professional play in 1993 which reduced the ball weight to 5¼ ounces

It was made of white ash wood core wrapped with two pieces of black polyurethane rubber compound and finished in beige cowhide

Since 1993, baseball weight has been reduced by around 7% every year

As of now, we can say  Newer balls are noticeably lighter than older ones

Average MLB baseball weight today

Today, a major league baseball has a radius of 375 inches and weighs between 5-525 ounces

The ball is a composite of four different types of thread materials that include polyester fibres, polyurethane-coated cotton, nylon braids, and rubber-coated cotton

As shown in the table below, there have been many changes throughout baseball history as the weight has been reduced by over 28% from the original baseball at 27 inches

Modern-day balls are significantly lighter than those used in professional play as recently as 20 years ago by as much as half an ounce

According to studies, this could potentially have a significant effect on how players perform during games

How To measure baseball weight?

To accurately measure the weight of a baseball, first find its circumference

Then compare it to the table below to determine the baseball weight in ounces

For example, if the circumference of a baseball is 9 inches then it can be determined that it weighs 5 ounces because it falls in the middle of the range at 90 inches

If a baseball circumference is 8 inches, then it weighs 49 ounces and if the circumference is 10 inches, then it weighs 61 ounces

It’s common to see different figures for an average baseball weight in many sources including 4-5 ounces and 150 grams

This is most likely caused by the fact that there are many different types of baseballs, from those used in youth leagues to those used specifically for professional play

When measuring a baseball circumference, do not use a metal tape measure as it can actually stretch the ball ever so slightly which will give an inaccurate measurement

Why is the weight of a baseball reduced every year if the size remains the same?

Batters would exert more force to make contact with the ball

However, it’s possible that the increase in weight would reduce fatigue and improve accuracy for pitchers

There is no research that has conclusively determined that lighter balls are easier or harder to hit

One study found that when baseballs weighing 6 ounces were used, fastball pitchers had an increase of 05 mph in average speed

Is there a difference between MLB regulation baseballs, minor league baseballs, or amateur ball?

There are very few differences in the materials used to make the three types of balls

The main difference is that professional balls are machine-sewn rather than hand-stitched in order to meet higher standards

We hope the above guide has given you a clear idea of How Much Does A Baseball Weigh?

Weight Of Baseball

I am a 2019 high school graduate who has been playing baseball since I was around 9 years old

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