Basketball Court Dimensions
Length of a basketball court
94 feet (1128 inches)
Note: Many high school and college courts are 84 feet.
Width of a basketball court
50 feet (600 inches)
Size of a basketball backboard
Width: 6 feet (72 inches)
Height: 3.5 feet (42 inches)
Size of a basketball rim
The diameter of the rim is 18 inches
The top of the rim should be exactly 10 feet (120 inches) off the ground
Distance from the backboard to the back of the rim
6 inches
Note: In other words, the front of the rim is 24 inches from the backboard (18 inches of which is the rim, and the other 6 inches the flat metal piece connecting the rim to backboard)
Distance from the free throw line to the backboard
15 feet (180 inches) from the backboard
Note: Due to the fact that the rim protrudes forward from the backboard, the actual distance from the free throw line to the front of the rim is just 13 feet (not including the elevation factor)
Size of the key
19 feet (228 inches) from the baseline out of bounds line to the free throw line
12 feet (144 inches) in width, across the lane
The basketball 3 point line
It’s important to note that the 3 point arc is not the same distance from the center of the rim at all spots. This results from the fact that on the baseline, the 3 point arc begins with a straight line, before starting its curve. Once the curve begins, the distance stays consistent all the way around the arc.
For the college and high school 3 point arc, there is a straight line of 5.25 feet (63 inches) that runs until the arc begins. For the NBA 3 point line, there is a straight line of just over 14 feet (approximately 169 inches) before the 3 point arc begins.
Once the 3 point arc begins, the college and high school 3 point arc is 19.75 feet (19 feet 9 inches, or 237 inches).
The NBA distance is 23.75 feet (23 feet, 9 inches, or 285 inches). However, on the baselines, with a line drawn directly from the center of the rim