Basketball Court Dimensions
Court Size Overall
NBA and College 94 feet long X 50 feet wide
High School 84 feet long X 50 feet wide
Junior High 74 feet long X 42 feet wide
For all courts the “foul line” is 15 feet from the front of the backboard to the foul line.
The Key or The Lane
The standard measurement for the key or the lane is 12 feet wide centered with the hoop and extends to the foul line. Then a 6 foot radius half circle extends out away from the hoop and connects to the ends of the foul line.
The 3 Point Line (Arc)
High School – The 3 point arc is 19 feet 9 inches centered with the hoop.
College – The 3 point arc is 20 feet 9 inches centered with the hoop.
NBA – The 3 point arc is 23 feet 9 inches centered with the hoop.
All marking lines are 2 inches wide.