Basketball courts come in different sizes based on the level of basketball being played. A professional NBA court is 94’ x 50’ | 28.65 x 15.24 m. Courts are comprised of several foundational components: the baskets, the three-point arcs, free-throw (foul) lines, and the half court line.
Basketball court dimensions are as follows: #1 NBA/NCAA - regulation basketball court dimension is 94' long by 50' wide. #2 High School basketball court dimension measure 84' long by 50' wide. #3 Jr. High School basketball court dimension measure 74' long and 42' wide.
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Overall Court Regulation Sizes are typically: NBA Professional and College – 94 feet long and 50 feet wide. High School – 84 feet long and 50 feet wide. Junior High – 74 feet long and 42 feet wide. The Foul Line: For all courts the “foul line” distance is 15 feet from the foul line to the front of the backboard.
The main difference between a college basketball court and a high school basketball court is the length. While college courts are 94' long, high school courts are 84'. Junior high courts are even smaller at 74' and play with a width of 42'.
In the National Basketball Association (NBA), the court is 94 by 50 feet (28.7 by 15.2 m). Under International Basketball Federation (FIBA) rules,  the court is slightly smaller, measuring 28 by 15 meters (91.9 by 49.2 ft). In amateur basketball, court sizes vary widely.
The NBA (National Basketball Association) official court size is 94 feet long by 50 feet wide, where the international court is a bit smaller. The FIBA (International Basketball Federation) rules state the court size should be 91.9 feet long by 49.2 feet wide for international basketball games.
Professional NBA and College Basketball court is 94 feet (29 m) by 50 feet (15 m). International Basketball the court 28 meters (92 ft) by 15 meters (49 ft). High school, and Junior High court 84 feet (26 m) by 50 feet (15 m).
Court size varies from league to league and from level to level in basketball. NBA court dimensions are 94 feet long by 50 feet wide, whereas WNBA and college courts are 50 feet wide by 94 feet long. Note that the paint area – the free throw lane – is 16 feet wide.