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.
NBA basketball courts have a 16-foot (4.9 m) rectangular key. Hash marks in an arc mark the portion of the circle for jump balls at the free throw line. Keys may have both NBA and NCAA or NAIA marking to allow use of the same floor by the both organizations. NCAA and NAIA basketball courts have a 12-foot (3.7 m) wide key.
More Basketball Court Key Size images
The regulation distance from the ground to the top of the rim is 10 feet for all levels of play. Regulation backboards are 6 feet wide (72 inches) by 42 inches tall. All basketball rims (hoops) are 18 inches in diameter. The inner square on the backboard is 24 inches wide by 18 inches tall.
The free throw line on a basketball court is always 15' from the line to the backboard. The distance from the ground to the basketball goal rim is 10'. The key is 12' wide (the width of the free throw line) for most courts and 16' from NBA.
Today, basketball courts at all levels share a common design for the key — a rectangle measuring either 19 feet by 16 feet or 19 feet by 12 feet. However, this was not always the case. From the creation of FIBA in 1956 until 2010, the key was a trapezoidal design that was significantly wider at the baseline.
Size (Overall): 94’ x 50’ | 28.65 x 15.24 m Area (Court): 4,700 ft2 | 436.64 m2 Baskets: 4’ | 122 cm from perimeter, 10’ | 305 cm high Three-point Arc: 23’9” | 7.24 m, 22’ | 6.7 m corners Free-Throw Line: 15’ | 4.57 m from basket Center Circle: 12’ | 366 cm diameter Material (Indoor): Polished wood, usually maple
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).
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.