Use the 94 ft by 50 ft full-court and 47 ft by 50 ft half-court defaults from the estimator, then choose the basketball rule markings that match the project owner.
The large grid diagram below highlights one contractor step at a time with the active measurement labels.
Step 1 of 11
Use full court size with NBA markings. Court dimensions are playing dimensions to the inside edge of boundary lines.
Keep court size and marking style separate when confirming the layout with the owner.
Full court playing dimensions measured to inside edges of boundary lines.
Court size and marking style are handled separately.
Paint centerlines after converting from inside-edge playing dimensions.
Approx. 124 sq ft of painted stripe area before waste.
Use these point names with the step-by-step contractor line-center method.
These values come from the basketball geometry engine and update with the selected court size and marking style.
| Playing width to inside edges | 50 ftinsideEdge reference |
|---|---|
| Playing length to inside edges | 94 ftinsideEdge reference |
| Boundary centerline width | 50 ft 2 incenterline reference |
| Boundary centerline length | 94 ft 2 incenterline reference |
| Center to sideline center | 25 ft 1 incenterline reference |
| Center to end-line center | 47 ft 1 incenterline reference |
| Mid-sideline to opposite end-line corner | 68 ft 9 5/8 incenterline reference |
| Full corner-to-corner centerline diagonal | 106 ft 8 3/8 incenterline reference |
| Basket center from inside end line | 5 ft 3 ininsideEdge reference |
| Lane width | 16 ftoutsideEdge reference |
| Lane side centerline separation | 15 ft 10 incenterline reference; Converted from official lane-width edge reference. |
| Court center to lane side centerline | 7 ft 11 incenterline reference |
| Free throw line distance | 19 ftfurthestEdge reference |
| Free throw line center from inside end line | 18 ft 11 incenterline reference; Converted from official free-throw line edge reference. |
| Free throw circle centerline radius | 5 ft 11 incenterline reference; Converted from official free-throw circle edge reference. |
| Three-point radius | 23 ft 9 inouterEdge reference |
| Three-point centerline radius | 23 ft 8 incenterline reference; Converted from official three-point edge reference. |
| Center circle centerline radius | 5 ft 11 incenterline reference; Converted from official center-circle edge reference. |
| Sideline center to three-point straight centerline | 3 ft 2 incenterline reference; Includes the boundary half-line and three-point half-line offsets. |
| Restricted/no-charge radius | 4 ftinnerEdge reference |
| Restricted/no-charge centerline radius | 4 ft 1 incenterline reference; Converted from official restricted-area edge reference. |
Line lengths are calculated from generated centerline geometry, including arcs and circles.
| boundary | 289 ft48 sq ft painted stripe area |
|---|---|
| center | 87 ft15 sq ft painted stripe area |
| lane | 76 ft13 sq ft painted stripe area |
| freeThrow | 98 ft16 sq ft painted stripe area |
| threePoint | 169 ft28 sq ft painted stripe area |
| restricted | 26 ft4 sq ft painted stripe area |
Basketball playing dimensions are treated as inside-edge dimensions, not boundary-line center-to-center dimensions.
NBA and NCAA full courts are commonly 94 ft x 50 ft; many high-school courts use 84 ft x 50 ft.
FIBA defines 28 m x 15 m from the inner edge of the boundary line, so do not mix FIBA inside-edge marks with outside-edge assumptions.
Source checked 2026-08-27.
Review sourceSource checked 2026-08-27.
Review sourceSource checked 2026-08-27.
Review sourceThese dimensions help you plan the layout. The calculator prices the scope, the colorizer previews the surface, and the map estimator places the court, fencing, lighting, and related items on the property.