D6 Dice
Gaming Supplies · 8 specs
Direct Answer
The 6-sided die (D6) is the most common cubic die standard. Standard board game dice measure 16 mm (5/8 inches) with indented, painted pips and rounded corners. Precision casino dice measure 19 mm (0.75 inches) with razor-sharp 90° edges, serialized markings, and flush-drilled pips filled with density-matched epoxy to minimize weight bias and maximize roll fairness.
Source: Nevada Gaming Control Board / International Dice Standards · Last reviewed Aug 28, 2026
Specs
| Standard Board Game D6 Size | 16 mm (0.63 inches / 5/8 in) |
| Precision Casino D6 Size | 19 mm (0.75 inches / 3/4 in, ±0.0005" tolerance) |
| Miniature / Wargaming D6 Size | 12 mm (0.47 inches) |
| Micro / Travel D6 Size | 8 to 10 mm |
| Opposite Faces Sum Rule | Always 7 (1 opposite 6, 2 opposite 5, 3 opposite 4) |
| Right-Handed Pip Orientation | 1-2-3 meet counter-clockwise at vertex Western standard |
| Left-Handed Pip Orientation | 1-2-3 meet clockwise at vertex Asian standard |
| Casino Edge Style | Razor Edge (Sharp 90° corner) maximum bounce fairness |
Standard Board Game (16 mm) vs. Casino Precision (19 mm)
- Standard Board Game D6 (16 mm / ⅝"): Injection-molded plastic with tumbled, rounded corners for easy rolling. Pips are recessed indentations filled with paint, which technically makes the '6' face slightly lighter than the '1' face (though negligible for casual play).
- Precision Casino D6 (19 mm / ¾"): Machined from high-grade acrylic blocks with tolerances within 0.0005 inches. Pips are drilled to matched depths and filled with a colored epoxy manufactured to closely match the specific gravity of the surrounding acrylic, minimizing weight bias.
The Universal Opposing-Sum 7 Rule
On all standard D6 dice, opposite faces must always sum to 7:
- 1 is opposite 6
- 2 is opposite 5
- 3 is opposite 4 Additionally, Western dice are typically 'right-handed' (if 1 is on top and 2 is in front, 3 is to the right).