Under National Basketball Association (NBA) rules, a regulation playing court is 94 feet long by 50 feet wide (measured inside the boundary lines). That size is also used by the WNBA and NCAA; FIBA international courts are slightly smaller at 28 by 15 meters (about 91.9 by 49.2 feet). The rim height is 10 feet in all of these rule sets.
Source: NBA Official Playing Rules 2025–26 (Rule No. 1 — Court Dimensions — Equipment; court diagram: length 94 feet, width 50 feet).