Pieces to Quadrillions (pc to quad)
1 piece equals 1×10⁻¹⁵ quadrillions exactly.
How to convert pieces to quadrillions
To convert pieces to quadrillions, multiply the number of pieces by 1×10⁻¹⁵. This factor is exact. To go the other way, multiply quadrillions by 1×10¹⁵.
quadrillions = pieces × 1×10⁻¹⁵
Example: 10 pieces = 1×10⁻¹⁴ quadrillions.
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
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
Quadrillion (quad)
10¹⁵ in the short scale.
Quadrillion is 10¹⁵, a thousand trillion, on the short scale, and it is a number most people meet only through energy statistics. The U.S. Energy Information Administration defines a quad as a quadrillion British thermal units and notes that national energy use typically reaches quadrillions of Btu. Its examples include 35.43 quads from petroleum, 33.61 from natural gas, and 8.17 from coal.
The name uses the Latin quadri-, four. It appears among the terms in Nicolas Chuquet's unpublished manuscript of 1484, alongside byllion and tryllion. On the long scale the same 10¹⁵ is called a billiard, and a quadrillion means 10²⁴. The SI prefix for 10¹⁵ is peta-. A quadrillion seconds is about 31.7 million years.
1 quadrillion = 1×10¹⁵ pieces (exactly).
Sources: U.S. EIA: British thermal units (Btu); Wikipedia: Names of large numbers; BIPM SI Brochure, 9th edition (2019)
Related conversions
- Quadrillions to pieces (reverse)
- Pieces to dozens
- Pieces to lakhs
- Pieces to millions
- Pieces to crores
- Pieces to billions (short scale)
- Pieces to pairs
- Pieces to hundred
- Pieces to gross
- Pieces to thousand
- Pieces to trillions (short scale)
- Pieces to score
- Pieces to half dozens
- Dozens to quadrillions
- Lakhs to quadrillions
- Millions to quadrillions
- Crores to quadrillions
- Billions (short scale) to quadrillions
See all counting & quantity units.