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.

An NBA basketball court is 94 feet long and 50 feet wide. In meters, it’s 28.65 m long and 15.24 m wide. The WNBA and NCAA use an identical court size—94 feet long by 50 feet wide.

Basketball court size varies depending on the league and level of play. The court measures 94 feet long by 50 feet wide for NBA court dimensions and WNBA and college. Note the paint area – the free throw lane – is 16 feet across. The foul line is 15 feet from the front of the backboard and 2 inches wide.

Professional courts must measure 94 feet in length, a distance that holds true for women's professional play also. Many college courts have the same length, but some college courts are actually 84 feet in length, usually because of age or a lack of space to use a full-length court.