A basketball court serves as the foundation for one of the most popular sports globally. It is the designated area where two teams compete against each other and execute plays, vying for the ultimate goal: scoring points by putting the ball through their opponent’s hoop. In this context, understanding the fundamental aspects of a basketball court is essential for enthusiasts, casual players, and professional athletes alike.

The court dimensions vary depending on the competitive level, ranging from high school regulations to professional standards, such as the NBA and FIBA. A regulation NBA court measures 94 feet in length and 50 feet in width, with specific markings and boundaries essential for gameplay. These include the three-point line, free-throw line, and key, which guide players in their offensive and defensive strategies.

Various materials are used for constructing basketball courts, with choices based on factors such as location, budget, and maintenance requirements. Traditionally, indoor courts utilize hardwood, while outdoor courts are often made of asphalt or concrete. Nonetheless, basketball courts all share common characteristics that provide the foundation for this exciting and dynamic game.

Understanding a Basketball Court

Court Dimensions

A standard basketball court has the following dimensions:

  • Length: 94 feet (28.65 meters)
  • Width: 50 feet (15.24 meters)

These dimensions apply to both professional NBA and NCAA courts. High school court dimensions may be slightly smaller, measuring 84 feet (25.6 meters) in length and 50 feet (15.24 meters) in width.

Court Markings

Basketball courts have various markings that serve different purposes within the game. Some key markings include:

  • Baseline: The boundary line at both ends of the court, also known as the endline.
  • Sideline: The boundary lines along the longer sides of the court.
  • Three-point line: An arc marking the boundary between two-point and three-point shot areas. In the NBA, it’s 23 feet 9 inches (7.24 meters) from the center of the basket, and in the NCAA, it’s 22 feet 1.75 inches (6.75 meters).
  • Free throw line: A 15-foot (4.57 meters) line from the center of the basket, where players shoot free throws.
  • Key: Also known as the paint or lane, it’s a rectangular area below the basket, measuring 19 feet (5.8 meters) long and 16 feet (4.88 meters) wide in the NBA, and 19 feet (5.8 meters) long and 12 feet (3.66 meters) wide in the NCAA.

Indoor vs. Outdoor Courts

Indoor and outdoor basketball courts may have different surface materials and lighting conditions. Here are some distinctions:

  • Indoor courts have smooth, wooden surfaces, often made from maple. They typically have more consistent lighting, which can lead to optimal visibility and performance.
  • Outdoor courts use various materials, such as concrete, asphalt, or rubberized surfaces. Lighting can be unpredictable, depending on time of day and weather conditions. This may affect visibility and overall playability.

Both types of courts provide unique challenges to players and may require adaptation to specific environments.

Court Components

Basketball Hoop

The basketball hoop is an 18-inch diameter ring, situated 10 feet above the ground at the center of the backboard. It is where players aim to score points by passing the basketball through it.


The backboard is a flat, vertical surface, typically made of glass, wood, or fiberglass. It is 6 feet wide and 3.5 feet tall, and it supports the basketball hoop. It assists players in making bank shots and provides a target for rebounds.

Free Throw Line

The free throw line is a 12-foot wide line situated 15 feet from the face of the backboard. It indicates where players stand to take free throws after being fouled. Free throws are worth one point each.

Three-Point Line

The three-point line is an arc that runs from sideline to sideline and serves as the boundary for three-point shots. It’s important in game strategy, as successful shots made from beyond the three-point line are worth three points each. In NBA and FIBA games, the distance of the three-point line is 22 feet in the corners and 23 feet 9 inches at the top of the arc. For college games, the distance is 22 feet 1¾ inches.

Basketball Court Terminology


The paint, also known as the lane, is the area closest to the basket on a basketball court. It is marked by lines that extend from the baseline to the free-throw line, forming a rectangular space. The paint is crucial in basketball as it is the area where players typically attempt to score from close range. Strategically, players aim to control this area on both offense and defense.


The key, also referred to as the free-throw lane or simply the lane, is the area on a basketball court enclosed by the free-throw line and the lines extending from the baseline. It is important to note that the key is not the same as the paint, although they are often used interchangeably. The key area is essential during free-throw attempts and has specific rules for positioning during such shots.


The baseline, or endline, is the boundary line behind each basketball hoop. It marks the boundary between the court and the out-of-bounds area. Players must be mindful of their positioning near the baseline and avoid stepping on or crossing this line to prevent turnovers. The baseline is also significant in terms of inbound plays, as many strategies are designed around passing the ball from the baseline to teammates on the court.

Half-Court Line

The half-court line is the line that runs perpendicular to the baselines and divides the basketball court in half. It is significant in several ways, such as defining the backcourt and the frontcourt for each team. Players must be cautious not to commit a backcourt violation, which occurs when the offensive team crosses this line and then takes the ball back into their own backcourt. The half-court line is also commonly used as the starting point for jump balls during some games.

Types of Basketball Courts

Regulation Size Courts

Regulation size courts are the standard for official basketball games. These courts measure 94 feet long and 50 feet wide, with a 12-foot radius half-circle for the three-point area. The free-throw line is 15 feet away from the backboard, and the key, also known as the restricted zone, is a painted area below the hoop.

  • Dimensions: 94 ft x 50 ft
  • Three-point area: 12 ft radius
  • Free-throw line: 15 ft
  • Key (Restricted zone): Painted area below the hoop

Professional Courts

Professional basketball courts, such as those used by the NBA and WNBA, have specific dimensions to meet their league’s requirements. The NBA court is 94 feet long and 50 feet wide, while the WNBA court is slightly smaller, measuring 94 feet long and 42 feet wide. Both leagues have a three-point line that is 23.75 feet away from the center of the basket, except for the corners, where the line is 22 feet away.


  • Dimensions: 94 ft x 50 ft
  • Three-point line: 23.75 ft (22 ft at corners)


  • Dimensions: 94 ft x 42 ft
  • Three-point line: 23.75 ft (22 ft at corners)

Non-Regulation Courts

Non-regulation basketball courts can be found in schools, parks, and recreational facilities. These courts may be smaller or have different dimensions and markings compared to regulation size or professional courts. They are often designed to accommodate multiple sports or to fit within limited space.

The dimensions and markings of non-regulation courts may vary, but they typically include:

  • Smaller court size
  • Three-point lines with varying distances (often between 19.75 and 22 feet)
  • Painted key areas
  • Free-throw lines at varying distances

When playing on non-regulation courts, players should familiarize themselves with the specific dimensions and rules of the court to ensure a fair and accurate game.