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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These hash marks shall be 3’ from the free throw lane line and extend 6” onto the court. Four hash marks shall be drawn (2” wide) parallel to the baseline on each side of the free throw circle. These hash marks shall be 13’ from the baseline and 3’ from the free throw lane lines and shall be 6” in 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'. The other primary difference is high school courts generally do not have a restricted arc under the basket.
Basketball courts come in different sizes. 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.
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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 NBA (National Basketball Association) official court size is 94 feet long by 50 feet wide, ...
NBA Professional Half Court Dimension is 50’ baseline by 47’ sidelines. College Women’s and Men’s basketball half-court dimensions are the same as the NBA. High School basketball half-court dimension is 50’ baseline by 42’ sideline. Basketball Key Dimensions (Free Throw Lane)