Dozens to Half Dozens (doz to ½ doz)

1 dozen equals 2 half dozens exactly.

1 dozen = 2 half dozens

How to convert dozens to half dozens

To convert dozens to half dozens, multiply the number of dozens by 2. This factor is exact. To go the other way, multiply half dozens by 0.5.

half dozens = dozens × 2

Example: 10 dozens = 20 half dozens.

Large-number names differ around the world: this site uses the short scale (billion = 10⁹) by default, and lists the long-scale billion separately.

About these units

Dozen (doz)

US & ImperialCurrent unit

Twelve items. Eggs, rolls and many goods are still sold by the dozen.

Dozen entered English from Old French douzaine, a group of twelve, built from douze, which comes from Latin duodecim, plus a suffix that makes a collective. Twelve earned its popularity partly by dividing evenly: it splits into halves, thirds, quarters, and sixths, which helps when sharing goods. One suggestion is that the roughly dozen lunar months in a solar year made twelve one of the earliest groupings.

Even in a decimal age, dozens persist in commerce, often for foods such as eggs. Larger multiples extend the system by twelves: a gross is 12 dozen, or 144, and a great gross is 12 gross, or 1,728. The idiom six of one, half a dozen of the other uses the unit to say two options come to the same thing. Twelve also gave English the baker's dozen, which adds one more.

1 dozen = 12 pieces (exactly).

Sources: Wikipedia: Dozen

Half Dozen (½ doz)

US & ImperialCurrent unit

Six items.

Half a dozen is six, and the phrase is best known from an idiom: six of one, half a dozen of the other. The saying works because the two quantities are identical, merely named differently, so it dismisses a choice between two options as pointless. The unit rests on the dozen, which came into English from Old French douzaine and Latin duodecim, and halving twelve leaves a number that still divides evenly by two and three.

In counting terms, half a dozen is 6 pieces or 3 pairs, and two of them make a dozen. A gross contains 24 half dozens, and a great gross contains 288. Because the larger bulk units are all built from twelves, half a dozen fits into every one of them with no remainder.

1 half dozen = 6 pieces (exactly).

Sources: Wikipedia: Dozen

Related conversions

See all counting & quantity units.