Basket ball Court

Basketball court dimensions

  • Court:
    • A regulation basketball court in international games is 91.9 feet (28.0 meters) long and 49.2 feet (15 meters) wide. In the NBA and NCAA the court is 94 by 50 feet (29 by 15 meters).
  • Backboard:
    • The backboard measures 6 by 3.5 feet (1.8 by 1.1 meters) and 4 feet (1.22 meters) inside the baseline.
  • Basket:
    • At almost all levels of competition, the top of the rim is exactly 10 feet (3.05 meters) above the court. The basket is a steel rim 18 inches (46 cm) diameter with an attached net.
  • Ball:
    • The size of the basketball is also regulated. For men, the official ball is 29.5 inches (75 cm) in circumference (size 7, or a “295 ball”) and weighs 22 oz (623.69 grams). If women are playing, the official basketball size is 28.5 inches (72 cm) in circumference (size 6, or a “285 ball”) with a weight of 20 oz (567 grams).

Basketball basic rules

Traveling :

  • A violation that occurs when a player with the ball walks, runs or takes too many steps without dribbling.
  • A player is allowed two steps after picking up the dribble, and after two steps, the player must keep an established pivot foot to the floor.
  • Also, when a player dives for a loose ball on the floor and gains possession, a player can’t roll over or attempt to stand.
  • The player that commits the violation is charged with a turnover.


  • Contact is part of basketball provided it’s while performing normal defensive and offensive duties, reaching for a loose ball, or otherwise provided that the contact doesn’t allow a player to gain an advantage on the play.

Point Field Goal

  • A field goal made taken from before the three-point line, which is worth two points.


  • When a player commits a personal foul (any foul that is not a technical foul or a flagrant foul) while the person is not in the act of shooting, the opposing team gains possession of the ball to inbound it from the out-of-bounds area that is closest to the spot of the foul.
  • When a player commits a personal foul while the person is in the act of shooting, the opposing player who draws the foul is awarded two free throws if his two-point field goal attempt misses and three free throws if his three-point field goal attempt misses.
  • If the field goal attempt is made when the opposing player draws a foul, he is awarded the points and one free throw.

Backcourt Violation

  • A violation called when the offense fails to bring the ball from the backcourt to the frontcourt within eight seconds after gaining possession.
  • When the violation is called, the offense loses possession of the ball and the opposing team inbounds the ball from the sidelines.
  • The player in possession of the ball when the violation is called is charged with a turnover.

Out of Bounds

  • The area of a basketball court outside the boundary lines. It is also a call made by referees when the ball crosses a boundary line.
  • Every level of competition has rules which govern the dimensions of the court. These dimensions include two end lines and two sidelines, as well as the height of the rim, backboard, and other parts of the court.
  • When a ball crosses a boundary determined to be outside the field of play, an out of bounds call is made. At some levels of play, a ball hitting the top of the backboard, or any hardware holding it up, is considered to be outside the field of play.

Free Throw Lane (Key)

  • The rectangular area in front of the basket that is bounded by the baseline, the foul lanes and the free throw line.Offensive players are prohibited from remaining inside the key for more than three consecutive seconds, a violation that results in a loss of possession.

Second Violation

  • A penalty against the team in possession of the ball when the shot clock reaches zero. The penalty results in a turnover (change of possession to the other team).

Fouls out

  • In the NBA, or any league that uses 48-minute games, a player is ejected from the game (or “fouls out”) when he commits six personal fouls. In NCAA, or any league that uses a shorter game clock, a player fouls out when he commits five personal fouls.