Basketball Court Marking Dimensions and Layout for Singapore Courts

Full and half-court basketball marking layout: 28 m × 15 m court, 5 cm line width, 6.75 m three-point arc, 5.80 m free-throw line and other key dimensions from FIBA Official Basketball Rules 2018.

Published 12 May 2026

A FIBA-compliant basketball court is one of the most precisely defined sports courts. Every line, arc and reference point has a fixed dimension. When line marking a basketball court — full size for a competition or training hall, or half size for a school yard — the layout has to match the chosen standard end to end. This article summarises the layout from FIBA Official Basketball Rules 2018, Rule 2 — Playing court and equipment and explains the practical implications for line marking work in Singapore.

Overall court dimensions

Playing court size: 28 m long by 15 m wide, measured from the inner edge of the boundary line.
Line width: all lines are 5 cm wide. They must be the same colour, normally white or another colour clearly contrasting with the court surface.
Boundary lines: sidelines and endlines bound the playing court. These boundary lines are not part of the playing court.
Run-off: any obstruction, including seated coaches, must be at least 2 m from the playing court.

Centre line and centre circle

The centre line runs parallel to the endlines from the mid-points of the sidelines and extends 0.15 m beyond each sideline.
The centre circle has a radius of 1.80 m, measured to the outer edge of the circumference.

Free-throw lines and restricted area

The free-throw line is parallel to each endline with its furthest edge 5.80 m from the inner edge of the endline. The line is 3.60 m long.
The free-throw semi-circle has a radius of 1.80 m.
The restricted area is rectangular, bounded by the endline, the extended free-throw line and two lines from the endline whose outer edges are 2.45 m from the mid-point of the endline.

Three-point line

The 3-point area is bounded by two lines perpendicular to the endline, with the outer edge of each at 0.90 m from the inner edge of the sideline, joined by an arc of radius 6.75 m measured from the point on the floor directly beneath the centre of the basket.
The distance from the inner edge of the mid-point of the endline to the point on the floor below the basket centre is 1.575 m.
The 3-point line itself is not part of the 3-point area.

No-charge semi-circle

Radius 1.25 m, measured from the point on the floor beneath the exact centre of the basket to the inner edge of the semi-circle.
Two parallel lines perpendicular to the endline, 0.375 m long, ending 1.20 m from the inner edge of the endline, complete the no-charge area.

Throw-in lines

Two lines, each 0.15 m long, are marked outside the playing court on the sideline opposite the scorer's table. Their outer edges are 8.325 m from the inner edge of the nearest endline.

Practical line marking notes

Plan the centreline first, then lay out the centre circle from it. Errors in the centreline propagate to every other feature.
Use a long tape and a string line for the 6.75 m three-point arc, fixed at the basket-centre projection on the floor.
Maintain the 5 cm line width consistently. A wandering stroke width is the most common visible defect on a re-marked court.
On multi-game courts, plan colour priority so the basketball lines remain the primary visual reference where basketball is the main game.

Half-court markings

For half-court layouts in school yards and condominiums, the restricted area, free-throw semi-circle, three-point arc and no-charge semi-circle are typically retained. The dimensions are not scaled down — a half-court still uses the same 6.75 m three-point arc if the layout is intended to follow the FIBA standard. Where space is limited, recreational layouts may use a smaller three-point distance, but that should be documented and not labelled as FIBA-compliant.

For a full layout job, see our court marking service, or read our notes on surface preparation and sports floor coating selection.

References used in this article

FIBA Official Basketball Rules 2018, Rule 2 — Playing court and equipment — Court dimensions, line widths and feature radii referenced throughout.

Need help with a court marking job?

Call +65 6968 3098, WhatsApp +65 9632 0750 or email david@ezzogenics.com. We can arrange a site visit, measure your court, and recommend the right coating and line layout.