Pool Tables

Direct Answer

Billiards and pool tables are standardized by the World Pool-Billiard Association (WPA) and the World Professional Billiards and Snooker Association (WPBSA). Regulation American tournament tables (9-foot) have a playing surface of 100 × 50 in (254.0 × 127.0 cm; strict 2:1 ratio) with 1.0 in (25.4 mm) slate, corner pocket openings of 4.5–4.625 in, and use 2.25 in (57.15 mm) balls (5.5–6.0 oz). British pool uses 7-foot tables with 2.0 in balls, and Snooker uses 12-foot tables with 2.0625 in balls.

Source: WPA (World Pool-Billiard Association) Tournament Table Specifications / WPBSA Official Rules · Last reviewed Aug 28, 2026

Specs

9-Foot Tournament Playing Area	254.0 × 127.0 cm (100.0 × 50.0 in; exact 2:1 ratio)
8-Foot Pro Playing Area	233.7 × 116.8 cm (92.0 × 46.0 in)
7-Foot Bar / Pub Playing Area	193.0 × 96.5 cm (76.0 × 38.0 in)
Playing Bed Slate Thickness	2.54 cm (1.00 in 3-piece precision-ground diamond-honed slate)
Table Height (Floor to Bed)	74.3–78.7 cm (29.25–31.0 in)
Corner Pocket Mouth Width	11.43–11.75 cm (4.50–4.625 in WPA pro tournament cut)
Side Pocket Mouth Width	12.70–13.02 cm (5.00–5.125 in)
American Pool Ball Diameter	57.15 mm (2.250 in / 156–170 g / 5.5–6.0 oz)
British Pool Ball Diameter	50.80 mm (2.000 in with 1.875 in cue ball)
Snooker Ball Diameter	52.50 mm (2.0625 in on 12 × 6 ft table)

The 2:1 Aspect Ratio & 3-Piece Precision Slate Bed

True 2:1 Geometry: Every regulation pool and snooker table is constructed such that the length of the playing surface between the rubber cushion noses is exactly twice the width. This ensures that bank shot geometric angles and diamond aiming systems remain perfectly uniform regardless of table size.
Diamond-Honed Slate: Tournament beds consist of three precision-matched Brazilian or Italian slate slabs bolted to a solid hardwood frame, leveled with shims, and joined with melted beeswax or automotive filler before being covered with worsted wool cloth (such as Simonis 860).