📐 Basketball Court Dimensions Calculator
Pick a court standard — NBA, FIBA, NCAA, or high school — and see every official measurement, from the paint to the 3-point line, in feet or metres.
📐 NBA (professional) court dimensions
| Dimension | Measurement |
|---|---|
| Court length | 94 ft |
| Court width | 50 ft |
| Key / paint width | 16 ft |
| Free-throw line (from baseline) | 19 ft |
| 3-point line (top of arc) | 23.75 ft |
| 3-point line (corner) | 22 ft |
| Center circle diameter | 12 ft |
| Rim height | 10 ft |
| Rim diameter | 1.5 ft |
| Backboard width | 6 ft |
| Backboard height | 3.5 ft |
Every line, every level
Court markings differ more than most players realize — the three-point line alone moves nearly four feet between high school and the NBA, which changes spacing, shot selection, and how far a shooter has to extend their range. Knowing the exact numbers helps coaches design drills that transfer to game distance.
Whether you're painting a driveway court, laying out a gym, or settling a debate, this reference gives the official figures for each standard with a one-click metric conversion.
❓ Frequently Asked Questions
How big is a basketball court?
An NBA and NCAA court is 94 by 50 feet (28.65 × 15.24 m). A FIBA international court is 28 by 15 metres (about 91.9 × 49.2 ft). A high-school (NFHS) court is shorter at 84 by 50 feet. Pick a standard above to see every marking.
How far is the 3-point line?
It varies by level. The NBA arc is 23 feet 9 inches at the top and 22 feet in the corners; FIBA is 6.75 m (6.60 m in the corners); NCAA men's is 22 feet 1.75 inches; and high-school is 19 feet 9 inches. The tool lists the top-of-arc and corner distances for each.
How high is a basketball rim?
The rim is 10 feet (3.05 m) above the floor at every level from high school to the NBA. The rim itself is 18 inches (45 cm) in diameter. These are constant across NBA, FIBA, NCAA, and NFHS play.
Can I convert the dimensions to metric?
Yes. Switch the units selector between feet and metres and every value converts instantly. Dimensions are stored in each governing body's native unit — feet for NBA, NCAA, and high school, metres for FIBA — and converted using the exact 1 ft = 0.3048 m relationship.