How big is a regulation basketball rim

Basketball Rims & Nets Dimensions & Drawings

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Basketball

Basketball rims, or hoops, are orange painted goals attached to the backboard and used for scoring points in a game of basketball. Basketball rims today are designed as breakaway rims comprised of a hinge and spring that allow the rim to bend when a player dunks without shattering the backboard. The rim itself is made of a 5/8” | 1.6 cm steel diameter steel rod that is formed into a ring with an inner diameter of 18” | 45.72 cm. Basketball nets are hung from the bottom of the rim with lengths between 15”-18” | 38.1-45.7 cm. Basketball rims are mounted 10’ | 3.05 m from the court floor.

Basketball rims, or hoops, are orange painted goals attached to the backboard and used for scoring points in a game of basketball. Basketball rims today are designed as breakaway rims comprised of a hinge and spring that allow the rim to bend when a player dunks without shattering the backboard. The rim itself is made of a 5/8” | 1.6 cm steel diameter steel rod that is formed into a ring with an inner diameter of 18” | 45.72 cm. Basketball nets are hung from the bottom of the rim with lengths between 15”-18” | 38.1-45.7 cm. Basketball rims are mounted 10’ | 3.05 m from the court floor.

How wide is a Basketball Rim?

Basketball rims have an inner clear diameter of 18” | 45.72 cm.

What is the size of a basketball compared to the rim?

Compared to the clear area of the basketball rim, a regulation basketball is 27% of the size of the opening.

How low does a basketball net hang?

Basketball nets hang 15”-18” | 38.1-45.7 cm below the rim.

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Diameter (Rim): 18” | 45.72 cm inner
Diameter (Steel): 5/8” | 1.6 cm
Distance from Backboard: 6” | 15.1 cm
Height (Rim): 10’ | 3. 05 m to court
Net Length: 15”-18” | 38.1-45.7 cm below rim
‍Basketball to Rim Ratio: Compared to the clear area of the basketball rim, a regulation basketball is 27% of the size of the opening.

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Basketball Rim & Net side elevation (basketball player - James Harden), side (detail), plan, plan (basketball)

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Bryan Maddock

Updated on

April 8, 2020

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BasketballSports

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Basketball is a team sport in which two teams of five players score points by shooting (throwing) a ball through an elevated hoop located on either side of the rectangular court. To advance the ball down the court, players must bounce the ball (dribble) or pass it to a teammate.

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6'9" | 2.06 m

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December 30, 1984

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LeBron James

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Kawhi Leonard

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Anthony Davis

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6’6" | 1.98 m

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February 17, 1963

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Michael Jordan

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1963.00

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6’3" | 1.91 m

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Russell Westbrook

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6’8” | 2.03 m

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5’9” | 1.75 m

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February 7, 1989

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Isaiah Thomas

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1989.00

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6’3" | 1.91 m

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March 14, 1988

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Steph Curry

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1988.00

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6’5” | 1.96 m

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August 26, 1989

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James Harden

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Kobe Bryant

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7’1” | 2.16 m

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March 6, 1972

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Shaquille O’Neal

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Dwyane Wade

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Chris Paul

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Joel Embiid

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6’2” | 1.88 m

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Damian Lillard

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Magic Johnson

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Yao Ming

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Dirk Nowitzki

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Steve Nash

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Backboards

9. 43”-9.51” | 24-24.2 cm

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Basketball

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Rims & Nets

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Hoop & Backboard

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What Is The Diameter Of A Basketball Hoop Rim? – Measuring Stuff

The basic concept of the game of basketball is to score more points than the other team. 

This involves shooting a ball through a basket and the team with the most baskets will win. 

There is more to it than that, but you get the idea. 

In order to shoot the ball into the basket, it’s important to know the size of both the basket and the ball as the ball needs to fit through the hoop to score points. 

Keep reading to find out the exact diameter of a basketball hoop along with other interesting basketball size information.

Basketball hoop rim diameter

The diameter of a basketball hoop rim used by professional leagues including the NBA, universities, and high schools is 18 inches or 45.72 centimeters. The diameter is measured from the inside of the rim and is the distance through the center of the rim dividing it into 2 equal parts. The radius of a basketball hoop rim is 9 inches.

According to the NBA equipment size regulations, rule number 1, section 2 states that the NBA-approved metal safety ring must be 18 inches in diameter. 

Basketball diameter size

The diameter of a regulation-size basketball is 9.51 inches. Knowing that the rim diameter is 18 inches, it’s easy to see that the ball will fit into the basket with room to spare. 

What is a size 7 basketball?

You may have heard that basketballs are given a number based on their size. 

For example, a size 7 basketball is one that has a circumference of 29.5 inches. 

They also have a weight of 22 ounces.

The size 7 ball is commonly used in pro basketball leagues like the NBA.

How much air does a basketball hold?

According to the NBA rule book mentioned above, the basketball must have between 7.5 and 8.5 pounds of pressure.

A deflated or over-inflated ball will affect the size and weight of the ball.

Will 2 basketballs fit in the rim?

Now that you know the size of both the basketball and the rim, you may be wondering if 2 basketballs will fit in the rim.

The answer is yes and no. There is a size difference between men’s and women’s basketballs. The basketballs used in men’s leagues are 9.51 inches and in women’s leagues are 9 inches.  So technically if filled with the right amount of air, 2 men’s basketballs will fit in the rim but will not fall through. But 2 women’s basketballs will fit inside the rim with enough space to fall through. 

How tall is the basketball hoop rim?

In all basketball leagues, a basketball hoop is 10 feet tall. This is measured from the ground to the rim. 

What is the size and purpose of the backboard?

Every basketball hoop is connected to a backboard that is 6 feet wide and 3.5 feet tall. 

On the backboard, it’s required to have a 2-inch white rectangle shape that is 24 inches wide and 18 inches tall. 

The purpose of the backboard and inner rectangle is to help the shooter aim and bank the basketball into the hoop. The backboard can be used for either a layup or bank shot, or a shot from a distance which will help guide the ball into the hoop. 

Other information regarding basketball hoops and rims

The basketball rims used in most professional leagues are called Enclosed spring breakaway rims.

These are used for safety and long-lasting purposes. 

Each hoop in the NBA consists of a pressure-release NBA-approved metal safety ring.

There are several factors that go into determining how much weight a basketball net can hold, but on average they are designed to hold around 230 pounds.  

Attached to the basketball hoop, is a white cord net that is 18 inches long. It also must not be less than 30 thread or more than 130 thread. 

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Size chart

Bicycle types

1. For outdoor activities A bicycle for active recreation, as a rule, means a mountain bike (from the English mountain bike). These bikes almost always have a suspension fork, a set of speeds, a landing with a slight tilt of the body forward. Suitable for riding both in the city and on the countryside or in the park. Frame geometry can be male or female.

2. Urban/Recreational A city bike is characterized by a comfortable fit with a straight back, a comfortable saddle, fairly wide tires with a not very pronounced tread. Convenient for leisurely trips in the city or a leisure park.

3. Baby They differ from each other, first of all, in the size of the wheels. Selected according to the height of the child. Bicycles with wheel diameters from 12 to 16 inches are almost always equipped with removable side support wheels. Side support wheels are also found on bicycles with eighteen or twenty inch wheels. You can determine the size of the bike in the table below.

4. Balance bikes For the smallest riders, aged from one and a half to five years, we advise you to purchase a balance bike. A bicycle-scooter without pedals will perfectly develop a child's coordination of movements, balance and principles of cycling control, as well as instill a love for such wonderful vehicle. After a balance bike, the child will learn to ride a bicycle with a pedal drive much easier.

5. Foldable Sometimes a bike is not needed very often and there is limited storage space. Or you need to periodically transport the bike in the car. Buying a folding bike will solve this or that problem. The wheel sizes of folding bikes vary widely and directly affect their compactness when folded.

6. Highway A bike with large but narrow tires, a ram-type handlebar, a rigid fork, and a large forward lean. A road bike is built for asphalt and speed. Narrow tires provide excellent rolling, while landing aerodynamics and efficient pedaling.

7. Touring/Hybrid Touring bikes were obtained by altering the road to the needs of the traveler. The fork is often shock-absorbing, with a moderate travel of 60-100 millimeters, tires 30-40 mm wide. Most often, the brakes are V-brake or disc. The frame and fork have special elements that allow you to install racks and full-size fenders. The steering wheel can be both curved and straight.

8. Double suspension For rough terrain and extreme riding, bicycles with a sprung rear wheel were created. The presence of depreciation on both wheels allows the rider to overcome difficult terrain, shaking and landing from any jumps or spans. Due to the complexity of the design, the cost of full-suspension is almost always higher compared to a bike on a rigid frame, but with similar attachments. It should not be forgotten that budget models are more intended for everyday use and do not tolerate extreme skiing.

Frame size chart

The tables are indicative values. In some cases, manufacturers deviate from the above standards. As a rule, the exact characteristics of bicycles are given on the official websites of the bicycle or frame manufacturer. For mountain bikes Frame size in inches Frame size in cm Reference designation Height in cm

For mountain bikes

Frame size in inches	Frame size in cm	Symbol	Height in cm
13	33	XS	130-145
fourteen	35.6	XS	135-155
fifteen	38.1	S	145-160
16	40.6	S	150-165
17	43.2	M	155-170
eighteen	45.7	M	165-175
19	48.3	L	172-180
twenty	50. 8	L	178-185
21	53.8	XL	180-190
22	55.9	XL	185-195
23	58.4	XXL	190-200
24	61	XXL	195-210

For road/tourist/cyclocross bikes.

frame size	Height of a cyclist	frame size	Seat tube/top tube length
49 - 51 cm.	157 - 163 cm.	XS	42 / 52 cm.
51 - 54 cm.	163 - 170 cm.	S	44 / 53.5 cm.
55 - 57 cm.	170 - 178 cm.	M	50 / 55.5 cm.
57 - 59 cm.	178 - 183 cm.	M/L	53.5 / 57 cm.
58 - 60 cm.	183 - 190 cm.	L	55. 5 / 58.5 cm.
61 - 63 cm.	190 - 198 cm.	XL	58.5 / 61 cm.

Children's bicycles

Bicycles

Your height	frame size
140 - 155 cm.	19.5-20.25″
155 - 165 cm.	20.25-20.5″
165 - 175 cm.	20.5-20.75″
175 - 185 cm.	20.75-21″
180 - 190 cm.	>21.0″

How to choose a bike for an adult

It’s worth starting the choice with an understanding of where, how and how often the bike will be used. The article "Types of bicycles" can help to understand this issue. By measuring your height, you can choose the required frame size. The third selection criterion will be the amount you are willing to spend. When choosing, we advise you to look at more expensive models. Often, adding just a little, you can get a bike with better suspension or with some interesting feature.

For women and the elderly, we recommend walking bikes with a ladies frame. This frame design does not require the leg to be moved over the saddle and makes it very easy to start or stop the movement.

If the bike is not often needed, there is an interest in its compactness, then you should pay attention to folding bikes. They come with different wheel diameters, which significantly affects the dimensions of the bike when folded, mobility and comfort of movement.

How to choose a bicycle for a child

The first step is to measure the height of the child. After consulting the table of sizes of children's bicycles, decide on the required wheel size. If the child was previously familiar with the bike, and the height according to the table is borderline, then choose a bike with a large diameter.

A teenager with a height of 140 cm or more can buy a bike with twenty-six inch wheels, but a small size, 13-15 inches (XS-S).

Toddlers are advised to purchase a balance bike. The child will get acquainted with two-wheeled transport, get used to the principles of cycling, will train balance and improve the coordination of their movements.

Accessories

Modern bicycles in most cases go in a "naked" form. In order to make riding more comfortable and safe, you should think about buying several accessories. First of all, we advise you to purchase a taillight, fenders, and also a helmet. The lantern will protect you on the road at night, the wings will protect you in bad weather. If a bicycle has become a permanent means of transportation for you or you are just an active user, then the presence of a helmet is mandatory. We also recommend buying a helmet for children.

In addition to those listed, there are a huge number of other accessories: bike computers, calls, flasks and bottle holders, trunks and bags for them, caps on nipples, mirrors and steps. You are free to customize your bike however you like.

Which bicycle rims are worth buying

Go to the rim selection catalog

Author: Anton Stepanov

Let's say that you are going to buy or assemble a new wheel. Let's say you came to the store and absolutely do not understand anything about rims. If you are still reading this text, then do not be discouraged, we were all beginners. After reading this article, you will know how to choose rims for a bicycle.

1. Design.

All bicycle bead rims feature a standard box section design with multiple stiffeners and U-shaped beads.

The strength and reliability of the box structure largely depends on its multi-wall construction. U-shaped section of the rim can be:

• without jumpers - single-walled (single) rim;
• with 1 bridge - double wall (double) rim;
• with 2 bridges - three-walled (triple) rim.

The more bridges, the higher the strength of the structure, this is a big plus! But the weight, as well as the cost increases - these are disadvantages. Therefore, the best option for amateurs is a double rim!

2. Materials.

The rim can be made from:

• aluminum alloy - has enough strength and lightness for amateurs, while it is inexpensive, so this is the most common option.
• steel - durable, but very heavy material, used less and less;
• carbon is an incredibly light and durable material, but very expensive, which is why it is popular only among professionals;
• branded alloys of various metals - usually do not surpass aluminum in terms of characteristics, but are more expensive.

3. Geometry

When choosing rims, be sure to pay attention to their dimensions, the main ones being the bore diameter and outer width. These parameters must be indicated in the rim marking. For example, marking 622x26 / 21x18 means that the landing diameter is 622 mm, the outer width is 26 mm, the inner width is 21 mm, and the height is 18 mm.

Bore can be measured in:

• in ISO units (mm), eg 622, 584 or 559 mm;
• in inches.

For niners, touring, hybrids, city bikes and road bikes, the 622 mm diameter is usually chosen, it fits 28 and 29 inch tires.

Mountain bikes and some hybrids and city bikes with 27.5 inch tires choose 584mm rims.

For mountain bikes with 26" tires choose rim diameter 559mm.

Width can be measured in:

• in ISO units (mm), e.g. 19 mm;
• in inches;
• can be denoted by the Latin letters "A" - "D" (adopted by the French).

For road bikes, the rim width is usually up to 15 mm.

For hybrids - 17 mm.

For amateur mountain bikes - 19 mm.

For stunt bikes - 21 mm;

For extreme sports (freeride, downhill...) - 23 mm or more.

4. Tips for choosing rims from Anton Stepanov.

So, if you're on a tight budget and need a good rim, then consider the following:

• don't fall for the seller's entreaties to get a welded, supposedly stronger rim;
• don't buy a single rim;
• forget about brands;
• good rim, wrong color easy to paint;
• almost no one needs heavy-duty, super-expensive rims;
• don't buy rims that don't match the spokes to the hubs;
• hole on the nipple - not a question;
• pistoning.

The rims are always seamed. It comes in two types: welded and riveted. For some reason, it is believed that a rim with a welded joint type is stronger and lighter. At times, the welded one is really lighter by 20-30 grams, due to the lack of pins that fasten the rim at the junction. However, there are welded rims with pins and they will weigh on par with riveted rims. The correct spoke will prevent the riveted rim from coming apart at the junction. Likewise, incorrect lacing and harsh use will kill both types of rims. By the way, a small gap at the junction is not scary!

Single and double rims. It would be more correct to say multi-profile, not double. Partitions are distributed in different ways and it happens that 3-4 sections can be found in the rim. Double rims are easy to repair and have a high margin of safety. Single rims are pieces of feces that are only needed by those who have a bicycle as a museum piece. In other words, fragile and non-repairable. If you made a strong 8-ku on a double rim, then you can pull it out with knitting needles, but you can’t on a single one.

Often famous rims are unfairly expensive. Throw aside the show-off. Some Wienmanns will be just as good as Mavics or DTs, if we are not talking about the World Cup.

Also don't worry if the store has the last pair of good rims left, but they are in different colors. The rim is the part of the bike that is least susceptible to external damage and friction. Even without professional painting, you can correct the color palette. A can of paint is enough.

Wide, strong and most importantly heavy rims for downhill and freeride in Double track style, DX32 or MTX 39- the prerogative of exclusively guys over 100 kg in weight and hellish tracks. They are needed for those who jump spans of 4+ meters in length and height, or even more. In fact, if you gently roll in, then they are not needed there either. Such a rim can save you from a serious undershoot, but simple daily skating without tin will ruin it with its weight.

If you have a 36-hole hub, and the store has a juicy rim with a 50% discount, but the trouble is for 32 holes, then discard the idea of ​​\u200b\u200b"assembly somehow".

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