Basketball court dimensions
The playing court dimensions are 28m long by 15m wide (Note: measurements are taken from the inside edge of the boundary line).
If the court is indoors, the height of the ceiling or the lowest obstruction above the floor should be at least 7m.
Basketball court lines
All lines should be 5cm in width and in the drawn in the same colour (usually white)
Boundary line dimensions
The minimum space around the court for run-off is 2m. Any obstruction (including team bench seats), must be installed at least 2m from the playing court.
Spectator seating must be at least 5m from the outside edge of the boundary lines of the playing court.
Centre circle dimensions
The centre circle is measured from the outer edge and has a radius of 1.8m. If painted, the inside of the centre circle should be the same colour as restricted areas.
The radius of the free-throw semi-circles should be 1.8m (which is measured to the outer edge of the circumference) and with the centre in the middle of the free-throw line.
The free-throw line is parallel to each end line. It’s furthest edge is 5.80m from the inner edge of the endline and is 3.60m long.
The Key dimensions
The Key measures in a rectangle of 5.8m by 3.6m. The restricted area must be painted for international competitions.
The rectangle areas represent the restricted areas and are marked on the playing court finished by the endlines. The extended free-throw lines and the lines originates at the endlines, their outer edges 2.45m from the mid-points of the endlines and terminating at the outer edge of the free-throw lines. These lines, excluding the endlines, are part of the restricted area. The interior of the restricted areas must be painted.
Free-throw rebound places along the restricted area, reserved for players during free throws and are marked in the diagram to the right.
Three point goal area dimensions
The three point line has been extended from 6.25m to 6.75m. Basketball Australia recommends that the courts should be marked with both three point lines (6.25m and 6.75m).
The new 6.75m three point line should be marked in white (or the same colour as the rest of the basketball court line) and the old 6.25m three point line marked in an alternate colour, ie yellow, red, green, blue or black.
The three point field goal area (see diagram on the next page) is the entire floor area of the playing court, except for the area near the opponents’ basket., limited by and including:
- Two parallel lines extending from and perpendicular to the endlines, with the outer edge 0.90m from the inner edge of the sidelines.
- An arc of radium 6.75m measured from the point on the floor beneath the exact centre of the opponents’ basket to the outer edge of arc. This distance of the point on the floor from the inner edge of the mid-point of the endline is 1.575m. The arc is joined to the parallel lines.
The three point line is not part of the three-point field goal area.
Throw-in line dimensions
A throw-in line 15cm long, outside the playing court, will be marked 8.325m from the end line (at the top of the three point arc) on the sideline opposite the scorer’s table. Previously this throw-in was administered at the half way line, opposite the scorer’s table.
No-charge semi-circle dimensions
The no-charge semi-circle lines shall be marked on the playing courts, limited by:
- A semi-circle with a radius of 1.25m measured from the point on the floor beneath the exact centre of the basket to the inner edge of the semi-circle. The semi-circle is joined to:
- Two parallel lines perpendicular to the endlines, the inner edge 1.25m from the point on the floor beneath the exact centre of the basket, 0.375m in length and ending 1.20m from the inner edge of the endline.
The no-charge semi-circle areas are completed by imaginary lines joining the ends of the parallel lines directly below the front edges of the backboards. The no-charge semi-circle lines are not part of the no-charge semi-circle areas.
*Please note: these guidelines have been obtained from the Department of Sport (WA) who provides the following warning: The information in this guide is general in nature and cannot be relied upon as professional advice concerning the design of, or marking out for, sporting facilities and playing areas. No assurance is given as to the accuracy of any information contained in this guide and readers should not rely on its accuracy. Readers should obtain their own independent and professional advice in relation to their proposed sporting activity.