An NBA basketball court measures 94 feet long and 50 feet wide. A FIBA court measures 28 meters by 15 meters (approximately 91 feet 10 inches by 49 feet 3 inches), while the ideal U.S. high school court measures 84 by 50 feet.
However, basketball court dimensions aren’t identical across every league. Three-point lines, free-throw lanes, and restricted-area markings also vary.
This guide compares the official measurements, explains the different court markings, and shows what to consider when planning a smaller home basketball court.
| League | Court length × width | Main three-point distance | Lane width |
|---|---|---|---|
| NBA | 94 × 50 ft | 23 ft 9 in | 16 ft |
| WNBA | 94 × 50 ft | 22 ft 1¾ in | 16 ft |
| FIBA | 28 × 15 m | 6.75 m | 4.90 m |
| NCAA men | 94 × 50 ft* | 22 ft 1¾ in | 12 ft |
| NCAA women | 94 × 50 ft* | 22 ft 1¾ in | 12 ft |
| NFHS high school | 84 × 50 ft ideal; up to 94 ft long | 19 ft 9 in | 12 ft |

The NCAA court diagram describes 50 feet as the optimum width.
The three-point measurements refer to the main arcs. Some leagues have shorter corner distances.
All these standards use a basket height of approximately 10 feet (3.05 meters).
The biggest differences are court length, three-point distance, lane width, and restricted-area markings.
NBA Basketball Court Dimensions
These measurements follow the NBA’s official court and equipment rules.
The National Basketball Association uses a playing court measuring 94 feet long and 50 feet wide.
That gives the court an area of 4,700 square feet, excluding space outside its boundaries.
The court has two baskets, a center line, a center circle, and marked shooting and free-throw areas at each end.
NBA Three-Point Line
The NBA three-point arc measures 23 feet 9 inches from the center of the basket.
However, the corner three-point distance is shorter.
The straight sections of the three-point line sit 3 feet inside the sidelines, making the corner distance approximately 22 feet.
This means an NBA three-point shot isn’t always taken from the same distance.
NBA Free-Throw Lane and Restricted Area
The NBA free-throw lane measures 16 feet wide.
The free-throw line sits 15 feet from the plane of the front face of the backboard.
A restricted-area semicircle with a 4-foot radius is marked underneath the basket.
This marking helps officials apply certain charging and blocking rules.
WNBA Basketball Court Dimensions
The Women’s National Basketball Association uses the same overall court size as the NBA.
Its main measurements include:
- Court length: 94 feet
- Court width: 50 feet
- Lane width: 16 feet
- Rim height: 10 feet
- Restricted-area radius: 4 feet
The main difference is the three-point line.
WNBA Three-Point Line
The WNBA three-point arc measures 22 feet 1¾ inches from the center of the basket.
That’s shorter than the NBA’s 23-foot-9-inch main arc.
Like the NBA, the WNBA uses straight corner sections positioned 3 feet inside the sidelines.
Therefore, NBA and WNBA basketball courts share the same playing surface dimensions but have different three-point markings.
FIBA Basketball Court Dimensions
FIBA, the International Basketball Federation, uses metric measurements.
These measurements follow FIBA’s official basketball rules.
A regulation FIBA court measures:
- Length: 28 meters (approximately 91 feet 10 inches)
- Width: 15 meters (approximately 49 feet 3 inches)
- Rim height: 3.05 meters
- Center-circle radius: 1.80 meters
A FIBA court is slightly shorter and narrower than an NBA court.
Its dimensions are measured from the inner edges of the boundary lines.
FIBA Three-Point Line
The FIBA three-point arc measures 6.75 meters, approximately 22 feet 1¾ inches.
This distance runs from the point directly below the basket’s center to the outside edge of the three-point line.
The straight corner sections have their outside edges positioned 0.90 meters from the inside edges of the sidelines.
FIBA Free-Throw Lane and No-Charge Area
The FIBA lane measures 4.90 meters wide.
The free-throw line is 3.60 meters long, with its farther edge positioned 5.80 meters from the inner edge of the end line.
FIBA officially calls the rectangular lane the restricted area.
It calls the semicircle underneath the basket the no-charge semicircle area, which has a radius of 1.30 meters.
This terminology matters because the NBA generally uses Restricted Area to describe the semicircle beneath the basket, rather than the entire rectangular lane.
NCAA Basketball Court Dimensions
NCAA college basketball uses a 94-foot court length, with 50 feet shown as the optimum width in its official court diagram.
The NCAA provides an official basketball court diagram showing the dimensions and markings used in college basketball.
Both men’s and women’s basketball use these main measurements:
- Court length: 94 feet
- Optimum court width: 50 feet
- Three-point arc: 22 feet 1¾ inches
- Corner three-point distance: 21 feet 7⅞ inches
- Free-throw lane width: 12 feet
- Center-circle radius: 6 feet
- Rim height: 10 feet
The 12-foot lane is narrower than the NBA’s 16-foot lane.
NCAA Men’s vs. Women’s Court Markings
Most major NCAA court dimensions are shared between men’s and women’s basketball.
However, their restricted-area rules differ.
NCAA men’s basketball uses a marked restricted-area arc with a 4-foot radius.
NCAA women’s basketball uses a restricted area directly underneath the basket, without requiring the same painted 4-foot arc.
This distinction is important when comparing NCAA basketball court markings.
High School Basketball Court Dimensions
The National Federation of State High School Associations (NFHS) provides the primary rules framework for U.S. high school basketball.
The NFHS provides an official high school basketball court diagram showing court dimensions and markings.
The ideal high school basketball court measures 84 feet long and 50 feet wide.
However, high school courts can be longer, with lengths up to 94 feet permitted.
This means not every high school basketball court has exactly the same dimensions.
High School Three-Point Line and Lane
The standard NFHS three-point arc measures 19 feet 9 inches.
That’s shorter than the main three-point lines used by the NBA, WNBA, NCAA, and FIBA.
Other measurements include:
- Lane width: 12 feet
- Free-throw line: 15 feet from the backboard face
- Center-circle radius: 6 feet
- Rim height: 10 feet
The standard NFHS court diagram doesn’t include an NBA-style painted restricted-area semicircle beneath the basket.
Schools planning construction or court repainting should consult the current NFHS court diagram and their state association’s requirements.
Basketball Court Lines and Markings Explained
The lines on a basketball court define boundaries, shooting distances, and areas used during play.

Sidelines, Baselines, and Half-Court Line
Sidelines run along the two longer sides of the court.
Baselines, also called end lines, run behind the baskets.
These lines mark the outer boundaries of the playing area.
The half-court line, or center line, divides the court into two halves.
It also helps determine frontcourt and backcourt violations.
Three-Point Line
The three-point line separates the two-point and three-point shooting areas.
A successful field-goal attempt counts for three points when the shooter releases the ball from the three-point area, without touching the line.
The distance depends on the league.
For example, the NBA’s main three-point arc is 23 feet 9 inches, compared with the NFHS high school distance of 19 feet 9 inches.
Free-Throw Line and Circle
The free-throw line identifies where players attempt free throws.
NBA, WNBA, and NCAA rules position the line 15 feet from the front face of the backboard.
FIBA measures its free-throw line from the end line instead.
The free-throw circle and semicircle markings surround the free-throw area. Their official dimensions depend on the competition rules.
The Key or Paint
The key, paint, and free-throw lane are common names for the rectangular area extending from the baseline toward the free-throw line.
The lane is:
- 16 feet wide in NBA and WNBA basketball
- 4.90 meters wide in FIBA basketball
- 12 feet wide in NCAA basketball
- 12 feet wide in NFHS high school basketball
This area is used when applying free-throw positioning rules, lane violations, and other playing restrictions.
Center Circle and Jump Ball
The center circle is positioned at midcourt.
It’s used during the opening jump ball and forms part of the court’s central markings.
The NBA and NCAA use a 6-foot center-circle radius.
FIBA uses a 1.80-meter radius.
Restricted Area and Charge Arc
Some basketball courts have a semicircle underneath the basket that affects charging and blocking decisions.
Examples include:
- NBA and WNBA: 4-foot restricted-area radius
- FIBA: 1.30-meter no-charge semicircle
- NCAA men: Painted 4-foot restricted-area arc
- NCAA women: Restricted area beneath the basket without the same painted arc
The names, markings, and associated rules aren’t identical across leagues.
Hash Marks and Lane Markings
Smaller court markings include hash marks and lane-space markings.
Lane markings identify where players stand during free throws.
Other marks may help define administrative areas or positions used during certain game situations.
Their exact locations depend on the applicable court diagram.
How Are Basketball Court Measurements Taken?
Official basketball court dimensions depend on specific measuring points.
Using the wrong edge of a painted line can produce an inaccurate layout.
Court Length and Width
Court length and width are measured according to the governing body’s boundary-line rules.
FIBA, for example, specifies a 28-by-15-meter playing court measured from the inner edges of its boundary lines.
Three-Point Distance
Three-point distance is measured from the basket’s center projected onto the floor.
It isn’t measured from the front of the rim.
The applicable rulebook also specifies which edge of the painted three-point line is used.
For example, FIBA and NCAA measurements identify the outside edge of the arc.
Free-Throw Distance
In NBA, WNBA, and NCAA basketball, the familiar 15-foot free-throw measurement refers to the plane of the front face of the backboard.
It doesn’t mean 15 feet from the baseline.
FIBA instead specifies that the farther edge of its free-throw line must be 5.80 meters from the inner edge of the end line.
Basket Position and Height
NBA and NCAA court diagrams place the basket center approximately 5 feet 3 inches from the end line.
FIBA specifies 1.575 meters.
The standard rim height is measured from the playing surface to the top edge of the rim.
For more detail, see our basketball hoop height guide.
Half-Court and Backyard Basketball Court Dimensions
You don’t need a full regulation basketball court to practice shooting or play recreational games.
Smaller layouts can work well, depending on available space.
How Big Is a Basketball Half Court?
Half the length of an NBA court is 47 feet.
Keeping the full 50-foot width gives a playing area measuring 47 × 50 feet.
Half the length of a FIBA court is 14 meters, giving a 14-by-15-meter playing area.
These figures are useful references when dividing regulation floors in half.
However, specific half-court competitions can have their own requirements.
Backyard Basketball Court Sizes
There’s no universal regulation size for a backyard basketball court.
A home court can be designed around the activities you want to practice.
Possible priorities include:
- Shooting from different positions
- Practicing free throws
- Working on layups
- Playing one-on-one basketball
- Including part of a three-point arc
A driveway shooting area can be much smaller than a recreational half court.
The important consideration is whether you have enough usable space for your intended activities and safe movement.
If you’re choosing equipment for your home court, our guide to the parts of a basketball hoop explains the rim, backboard, pole, and base.
Is 30 × 30 Feet Enough for Basketball?
A 30-by-30-foot area can accommodate a compact recreational shooting setup, depending on hoop placement and surrounding space.
It may provide room for shooting drills, close-range practice, and some limited movement.
However, it won’t accommodate a regulation half court.
If you’re planning a home basketball court, consider where the basket will stand and how much room players need around it.
Basketball Court Space and Clearance
The playing court and the total space required for a basketball facility aren’t always the same.
Space Around the Boundaries
Players need room outside the sidelines and baselines.
For official FIBA basketball, the playing court measures 28 × 15 meters, but the surrounding floor must include an unobstructed boundary lane at least 2 meters wide.
This makes the minimum overall FIBA court-and-surroundings footprint 32 × 19 meters.
Other organizations have their own requirements.
For recreational courts, avoid placing hard obstacles where players are likely to run or land.
Indoor Ceiling Height
Indoor basketball courts also need enough overhead space for shooting and other play.
A low ceiling can interfere with high-arcing shots.
However, one ceiling-height measurement shouldn’t be treated as suitable for every professional arena, school gym, and home basketball area.
If you’re designing a regulation facility, check the relevant competition and building requirements.
For a home setup, consider the actual ceiling height, the type of hoop, and the activities you intend to practice.
Frequently Asked Questions
Are NBA and College Basketball Courts the Same Size?
Both use a 94-foot court length, with 50 feet serving as the standard NBA width and optimum NCAA width.
However, their markings differ.
The NBA has a 16-foot lane and a 23-foot-9-inch main three-point arc. NCAA courts use a 12-foot lane and 22-foot-1¾-inch arc.
Is a WNBA Court Smaller Than an NBA Court?
No. Both use a 94-by-50-foot playing surface.
The WNBA has a shorter main three-point line.
Is a FIBA Court Smaller Than an NBA Court?
Yes. A FIBA court measures 28 × 15 meters, compared with the NBA’s 94 × 50 feet.
How Long Is a High School Basketball Court?
The NFHS ideal length is 84 feet, although courts up to 94 feet long are permitted.
How Far Is the Three-Point Line?
The main three-point distance is 23 feet 9 inches in the NBA, 22 feet 1¾ inches in the WNBA and NCAA, 6.75 meters in FIBA, and 19 feet 9 inches in NFHS high school basketball.
Corner distances can differ.
How Far Is the Free-Throw Line From the Basket?
In NBA, WNBA, and NCAA basketball, the free-throw line is positioned 15 feet from the front face of the backboard.
FIBA uses a different reference point measured from the end line.
Does a Home Basketball Court Need Regulation Dimensions?
No. Home basketball courts can be smaller than regulation courts.
Choose dimensions based on your space, playing needs, and safe clearance around the hoop.
Final Answer
Basketball court dimensions vary by league.
NBA and WNBA courts measure 94 × 50 feet. FIBA courts measure 28 × 15 meters. NCAA courts use a 94-foot length with an optimum width of 50 feet, while the ideal NFHS high school layout measures 84 × 50 feet.
The three-point line, lane width, and restricted-area markings also differ.
For competition use, refer to the current official court diagram. For recreational basketball, choose a court layout that suits your available space and intended activities.






















