Basketball court dimensions & sizes
The measurements are fixed, but which set applies depends on the format you are building. FIBA and NBA full courts, half courts, 3x3 and compact key courts, in metric and imperial, with the run-off each one needs.
Basketball court dimensions: quick-reference table
| Measurement | FIBA | NBA | NCAA | High School |
|---|---|---|---|---|
| Full court | 28 × 15 m (91.9 ft × 49.2 ft) | 28.65 × 15.24 m (94 ft × 50 ft) | 28.65 × 15.24 m (94 ft × 50 ft) | 25.6 × 15.24 m (84 ft × 50 ft) |
| Half court | 14 × 15 m (45.9 ft × 49.2 ft) | 14.33 × 15.24 m (47 ft × 50 ft) | 14.33 × 15.24 m (47 ft × 50 ft) | 12.8 × 15.24 m (42 ft × 50 ft) |
| 3×3 court (FIBA) | 11 × 15 m (36.1 ft × 49.2 ft) | - | - | - |
| Lateral area | 3 m (9.8 ft) | 3 m (9.8 ft) | 3 m (9.8 ft) | 3 m (9.8 ft) |
| Outer dashed line | 3.7 m (12.1 ft) | 3.7 m (12.1 ft) | 3.7 m (12.1 ft) | 3.7 m (12.1 ft) |
| Role 1 shooting line | 0.8 m (2.6 ft) | 0.8 m (2.6 ft) | 0.8 m (2.6 ft) | 0.8 m (2.6 ft) |
| Lateral basket rims | 2.2 m (7.2 ft) | 2.2 m (7.2 ft) | 2.2 m (7.2 ft) | 2.2 m (7.2 ft) |
| 3-point arc | 6.75 m (22.1 ft) | 7.24 m (23 ft 9 in) | 6.75 m (22.1 ft) | 6.02 m (19 ft 9 in) |
| Corner 3 distance | 6.6 m (21.7 ft) | 6.71 m (22 ft) | 6.6 m (21.7 ft) | 6.02 m (19 ft 9 in) |
| Free-throw line | 5.8 m (19 ft) | 5.79 m (19 ft) | 5.79 m (19 ft) | 5.79 m (19 ft) |
| Key (paint) | 5.8 × 4.9 m (19 ft × 16.1 ft) | 5.79 × 4.88 m (19 ft × 16 ft) | 5.79 × 3.66 m (19 ft × 12 ft) | 5.79 × 3.66 m (19 ft × 12 ft) |
| Lane space marks | 0.85 m (2.8 ft) | 0.91 m (3 ft) | 0.91 m (3 ft) | 0.91 m (3 ft) |
| Free-throw circle | 1.8 m (5.9 ft) | 1.83 m (6 ft) | 1.83 m (6 ft) | 1.83 m (6 ft) |
| Centre circle | 1.8 m (5.9 ft) | 1.83 m (6 ft) | 1.83 m (6 ft) | 1.83 m (6 ft) |
| No-charge semi-circle | 1.25 m (4.1 ft) | 1.22 m (4 ft) | 1.22 m (4 ft) | - |
| Basket centre from baseline | 1.58 m (5 ft 2 in) | 1.6 m (5 ft 3 in) | 1.6 m (5 ft 3 in) | 1.6 m (5 ft 3 in) |
| Rim height | 3.05 m (10 ft) | 3.05 m (10 ft) | 3.05 m (10 ft) | 3.05 m (10 ft) |
| Backboard | 1.8 × 1.05 m (5.9 ft × 3.4 ft) | 1.83 × 1.07 m (6 ft × 3 ft 6 in) | 1.83 × 1.07 m (6 ft × 3 ft 6 in) | 1.83 × 1.07 m (6 ft × 3 ft 6 in) |
| Line width | 50 mm (2 in) | 51 mm (2 in) | 51 mm (2 in) | 51 mm (2 in) |
| Run-off (per side) | 1 m (3.3 ft) | 1 m (3.3 ft) | 1 m (3.3 ft) | 1 m (3.3 ft) |
| Footprint incl. 1 m run-off | 30 × 17 m (98.4 ft × 55.8 ft) | 30.65 × 17.24 m (100.6 ft × 56.6 ft) | 30.65 × 17.24 m (100.6 ft × 56.6 ft) | 27.6 × 17.24 m (90.6 ft × 56.6 ft) |
What are the dimensions of a basketball court?
Basketball court dimensions vary by format, level of play, and governing body. This guide covers every major court size — full courts, half courts and 3×3 layouts — with measurements in metric and imperial. Use these specifications to plan an accurate layout and confirm your court meets FIBA or NBA requirements.
Full FIBA basketball court measurements
Slightly smaller than an NBA court (94 × 50 ft), a FIBA full court measures 28 m × 15 m (91.9 × 49.2 ft). When planning a court, account for run-off — a minimum of 2.05 m is recommended for professional basketball, and 1.05 m for community or club level play.
The 3-point arc on FIBA courts is 6.75 m from the centre of the basket, reducing to 6.6 m at the corners. The free throw line sits at 4.6 m (15.09 ft) from the front of the backboard — marginally further than the NBA standard of 4.57 m (15 ft).
What are the dimensions of a half court basketball court?
Half courts feature the same line markings as a full court, but only one end, with one basketball hoop. Purpose-built half courts are rarely long enough to be truly half of a full court. Foul line distance, 3-point arc and other dimensions remain exactly the same as on a full court. Some variations exist — in 3×3 basketball competition, for example, the free throw arc is not included and a restricted area is marked 11 m from the baseline.
How much space is required for a basketball key court?
Key Courts as the name suggests, require enough space to accommodate a basketball key. A FIBA regulation key is 4.9 m wide and 5.8 m deep, measured from the baseline to the far edge of the free-throw line — which is 4.6 m from the face of the backboard. When planning key court lines, you need to consider the footprint of the basketball goal as this can directly impact the available space beyond the free throw line, where longer distance shooting practice takes place.
OnCourt’s smallest basketball key court, the Garden key court, requires just 6.11 × 6.72 m, providing enough space to shoot from the 4.6 m foul line. This compact layout covers free throw and lay-up practice. To enable shooting from a section of the 3-point arc, the court needs to be extended to at least 9.38 m in length.
NBA and FIBA court dimensions compared
The two main governing bodies use slightly different court specifications. Knowing the differences matters when specifying equipment, comparing court sizes, or working to international standards.
- FIBA full court: 28 m × 15 m
- NBA full court: 28.65 m × 15.24 m (94 ft × 50 ft)
- FIBA 3-point arc: 6.75 m from the centre of the basket, reducing to 6.6 m at the corners
- NBA 3-point arc: 7.24 m from the centre of the basket, reducing to 6.71 m at the corners
- FIBA free-throw line: 5.80 m from the inner edge of the baseline — 4.60 m from the face of the backboard, which sits 1.20 m inside the baseline
- NBA free-throw line: 5.79 m from the baseline — 4.57 m (15 ft) from the face of the backboard
- FIBA key (restricted area): 4.9 m wide × 5.8 m deep
- NBA key (restricted area): 4.88 m (16 ft) wide × 5.79 m deep
3×3 basketball court dimensions
3×3 is played on a half court using one basket. FIBA governs the format internationally, and the court dimensions differ from a standard half court.
- Court area: 15 m × 11 m
- 3-point arc: 6.75 m from the centre of the basket
- No-charge semicircle: 1.25 m radius from the centre of the basket
- Shot clock: 12 seconds (versus 24 seconds on a full court)
Run-off and total area requirements
The court is only part of the space you need. Run-off — the clear zone around the perimeter — is essential for player safety and, at competition level, mandatory under FIBA regulations.
- Club and recreational use: 1 m run-off on all sides
- FIBA competition: 2 m run-off on all sides
- Home and garden courts: 1 m minimum run-off recommended
A standard full court with 1 m of run-off on each side requires a total footprint of 30 m × 17 m. A half court under the same conditions needs 16 m × 17 m.
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Frequently asked questions
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