How Many Tiles and Dots Are In A Dominoes Set?
Dominoes FAQ
The number of tiles in a dominoes set is calculated by the following formula (where n is the highest number on a domino, e.g. "6" for a double-six set):
number of tiles = ((n2 + (3 * n) + 2) / 2)
The number of dots (pips) in a dominoes set is calculated by the following formula (again, n is the highest number on a domino):
number of dots = ((n3) / 2) + ((3 * n2) / 2) + n
This also works out to a much easier formula:
number of dots = number of tiles * n
Here are the totals for all common domino sets, in a table:
| Domino Set | Number of Tiles | Number of Dots |
|---|---|---|
| Double Six (6-6) | 28 | 168 |
| Double Nine (9-9) | 55 | 495 |
| Double Twelve (12-12) | 91 | 1092 |
| Double Fifteen (15-15) | 136 | 2040 |
| Double Eighteen (18-18) | 190 | 3420 |
Dominoes Info