Half court basketball dimensions at a glance: regulation half court size by level of play, every key line measurement, a diagram, and what a backyard half court needs.
| Element | Measurement |
|---|---|
| Half court, NBA and NCAA | 50' x 47' (2,350 sq ft) |
| Half court, high school | 50' x 42' (2,100 sq ft) |
| Rim height | 10' |
| Free-throw line | 15' from the backboard |
| Lane (key) width, high school and college | 12' |
| Lane (key) width, NBA | 16' |
| Free-throw circle | 6' radius |
| Three-point line, high school | 19' 9" |
| Three-point line, NCAA | 22' 1 3/4" |
| Three-point line, NBA | 23' 9" (22' in the corners) |
| Backboard | 6' wide, 4' in from the baseline |
Most home courts are not regulation. The size is set by the yard, then the lines are fitted to it. A full high school three-point arc needs about 40 feet of width. A free-throw line and lane need about 19 feet of depth from the baseline and 12 feet of width. A regulation 50 by 42 or 50 by 47 foot half court is the right target only if you have the space and want true corner threes.
Builders price by the square foot of pad. A standard half court is estimated as a 2,500 sq ft pad, which costs $37,500 to $52,500 to build. Smaller custom pads cost less in proportion: enter your own length and width in the calculator. See the half court cost breakdown and full court dimensions.
Price your own court in 3 minutes50 feet wide by 47 feet deep for NBA and college, 50 by 42 feet for high school.
2,350 square feet at NBA and college size, 2,100 square feet at high school size. Builders typically price about 2,500 square feet to include run-off.
Whatever the yard allows. A lane and free-throw line need about 19 feet of depth. A full high school three-point arc needs about 40 feet of width. A regulation half court is 50 by 42 feet.
15 feet from the face of the backboard.