Pairs to Pieces (pr to pc)
1 pair equals 2 pieces exactly.
How to convert pairs to pieces
To convert pairs to pieces, multiply the number of pairs by 2. This factor is exact. To go the other way, multiply pieces by 0.5.
pieces = pairs × 2
Example: 10 pairs = 20 pieces.
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
Pair (pr)
Two items.
Pair comes from Old French paire, which grew out of Latin paria, the neuter plural of par, meaning equal. German Paar and Dutch paar are relatives of the same word. The core idea is two matching things taken together, as in a pair of shoes or gloves.
English also uses pair for single objects built from two connected parts. Scissors, spectacles, trousers, and jeans are plural-only nouns, so a counting word is needed: you say a pair of scissors or several pairs of jeans. That makes the unit slightly slippery. Six pairs of socks is 12 socks, but six pairs of scissors is only six objects. The word has other senses too, such as two people in a relationship or two cards of equal rank in poker, but as a quantity of loose items it is always two.
1 pair = 2 pieces (exactly).
Sources: Wiktionary: pair
Piece (pc)
A single item.
Piece is the plain unit for counting individual items, with no grouping implied. The word reached English from Old French piece, which came from Late Latin pecia or petia, meaning a fragment or a parcel of land. Its ultimate origin is uncertain, though Wiktionary notes a possible Gaulish source. It displaced the native Old English styce, which meant the same kind of thing.
Wiktionary defines it as a single item belonging to a class of similar items, and the word turns up in compounds such as by the piece, piece rate, and piecework. Every other counting unit in this family is just a fixed number of pieces: a pair is 2, a dozen 12, a gross 144, and a great gross 1,728. Treating the piece as the base is what lets any of them convert into any other by simple multiplication or division.
The piece is the reference unit for counting & quantity on this site.
Sources: Wiktionary: piece
Related conversions
- Pieces to pairs (reverse)
- Pairs to dozens
- Pairs to lakhs
- Pairs to millions
- Pairs to crores
- Pairs to billions (short scale)
- Pairs to hundred
- Pairs to gross
- Pairs to thousand
- Pairs to trillions (short scale)
- Pairs to score
- Dozens to pieces
- Lakhs to pieces
- Millions to pieces
- Crores to pieces
- Billions (short scale) to pieces
- Hundred to pieces
- Gross to pieces
- Thousand to pieces
- Trillions (short scale) to pieces
- Score to pieces
- Half dozens to pieces
- Quadrillions to pieces
See all counting & quantity units.