Dartboards
Target & Cue · 10 specs
Direct Answer
Official dartboard specifications are standardized by the World Darts Federation (WDF) and the Professional Darts Corporation (PDC). A regulation bristle dartboard has an outer diameter of 17.75 in (45.1 cm), divided into 20 radial segments. The center bullseye is mounted at exactly 5 ft 8 in (1.727 m) above the floor, with the throwing line (the oche) positioned at a horizontal distance of 7 ft 9¼ in (2.369 m) from the face of the board (9 ft 7⅜ in diagonal).
Source: WDF (World Darts Federation) Playing and Tournament Rules / DRA (Darts Regulation Authority) Rulebook · Last reviewed Aug 28, 2026
Specs
| Outer Target Diameter | 45.1 cm (17.75 in standard outer frame) |
| Bullseye Height (Floor to Center) | 1.727 m (5.0 ft 8.0 in / 68.0 in exact) |
| Horizontal Throw Line Distance (Oche) | 2.369 m (7.0 ft 9.25 in / 93.25 in from board face) |
| Diagonal Distance (Bullseye to Oche) | 2.931 m (9.0 ft 7.375 in / 115.38 in Pythagorean hypotenuse) |
| Double & Treble Ring Width | 8.0 mm (0.315 in tournament blade wire) |
| Inner Bullseye (50 Points) Diameter | 12.7 mm (0.50 in) |
| Outer Bullseye (25 Points) Diameter | 31.8 mm (1.25 in) |
| Treble Ring Radius (to outer wire) | 107.0 mm (4.21 in) |
| Double Ring Radius (to outer wire) | 170.0 mm (6.69 in) |
| Board Material | Compressed Kenyan Sisal Hemp Fibers with Blade Wiring Self-Healing Bristle |
Triangulation Geometry & Sisal Blade Wiring
- 3-4-5 Triangulation Mounting: The exact oche placement is verified by measuring the hypotenuse from the center of the bullseye (5 ft 8 in high) to the back edge of the raised oche line, which must equal exactly 9 ft 7⅜ in (2.931 m).
- Ultra-Thin Blade Wiring: Modern tournament boards (Winmau Blade 6) utilize razor-thin 60° triangular blade wires pressed flush into the sisal bed without staples to eliminate bounce-outs.