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A dozen is has twelve (12) items of something. The term goes back to duodecim, which means 12 in Latin. Humans might have started to count on a base 12 because there are approximately 12 cycles of the moon in one cycle of the sun. In other words, a solar year has 12 months. The first to have used the unit were probably the Mesopotamians.
12 dozen (144 items) are a gross. 12 gross (1728 items) are called a great gross. A great hundred is 120 or ten dozen (a dozen for each finger on both hands).
Conversion table | ||
|---|---|---|
| 1 doz | = 0.92307692307692 bakers dozen (bk doz) | ⇛ |
| 1 doz | = 6 couples (cp) | ⇛ |
| 1 doz | = 0.083333333333333 dozen dozen (doz doz) | ⇛ |
| 1 doz | = 1 dozens (doz) | ⇛ |
| 1 doz | = 0.0069444444444444 great gross (gr gr) | ⇛ |
| 1 doz | = 0.083333333333333 gross (gr) | ⇛ |
| 1 doz | = 2 half dozen (half dz) | ⇛ |
| 1 doz | = 12 items (i) | ⇛ |
| 1 doz | = 0.1 long hundred (lg100) | ⇛ |
| 1 doz | = 1.9926468485126E-23 moles (mol) | ⇛ |
| 1 doz | = 6 pairs (pr) | ⇛ |
| 1 doz | = 12 pieces (pcs) | ⇛ |
| 1 doz | = 0.024 reams (r) | ⇛ |
| 1 doz | = 0.6 scores (sc) | ⇛ |
| 1 doz | = 0.1 small gross (sm gr) | ⇛ |
| 1 doz | = 0.083333333333333 square dozen (sq doz) | ⇛ |
| 1 doz | = 4 trio (3) | ⇛ |
| 1 doz | = 12 units (u) | ⇛ |