Bytes to Pebibytes (B to PiB)
1 byte equals 8.881784197×10⁻¹⁶ pebibytes (rounded).
How to convert bytes to pebibytes
To convert bytes to pebibytes, multiply the number of bytes by 8.881784197×10⁻¹⁶. The factor is rounded to 10 significant digits. To go the other way, multiply pebibytes by 1.125899907×10¹⁵ (rounded).
pebibytes = bytes × 8.881784197×10⁻¹⁶
Example: 10 bytes = 8.881784197×10⁻¹⁵ pebibytes.
Decimal prefixes (kB, MB, GB) are powers of 1,000; binary prefixes (KiB, MiB, GiB) are powers of 1,024. Storage makers use decimal; Windows reports binary but labels it GB.
About these units
Byte (B)
Eight bits. The basic addressable unit of memory and storage.
Werner Buchholz coined the word byte in June 1956 while working on the IBM Stretch computer; the earliest supporting document is dated 11 June 1956. He respelled bite on purpose, in his words to avoid accidental mutation to bit. At that stage a byte was any group of one to six bits, and a move to eight bits was considered in August 1956 and built into the design soon after. Louis Dooley later claimed he had coined the term around 1956 or 1957 on the SAGE project at MIT Lincoln Laboratory, where it meant groups of four bits, but Fred Brooks credited Buchholz.
IBM's System/360 adopted the eight-bit byte, and its success made that size the standard. The symbol is a capital B, and the unambiguous alternative is octet, a word used in protocol standards such as RFC 791. A byte can hold 256 distinct values, enough for a letter of the alphabet in a simple character set, which is why files and memory addresses are counted in bytes.
The byte is the reference unit for digital storage on this site.
Sources: Wikipedia: Byte; Wikipedia: Binary prefix
Pebibyte (PiB)
Exactly 2⁵⁰ bytes (about 1.126 petabytes).
Pebi was one of the two prefixes, with exbi, that the IEC added in January 1999 as Amendment 2 to IEC 60027-2, extending the set it approved in December 1998. The name keeps the first two letters of peta and appends bi for binary, and the symbol is PiB. It is a binary unit of exactly 2^50 bytes, or 1,125,899,906,842,624 bytes.
That is 1,024 tebibytes. Set against the decimal petabyte of 10^15 bytes, a pebibyte is about 12.6 percent larger, a gap that has grown with each prefix step from 2.4 percent at kilo. As a result, anyone who divides a 1 PB figure from a storage vendor by 2^50 will see about 0.89 PiB.
The pebibyte is useful where capacity is counted in powers of two and the exact size must be unambiguous. Wikipedia illustrates the petabyte scale as about 2,000 years of music in MP3 form.
1 pebibyte = 1.125899907×10¹⁵ bytes (approximately).
Sources: Wikipedia: Binary prefix; Wikipedia: Byte; NIST: Prefixes for binary multiples
Related conversions
- Pebibytes to bytes (reverse)
- Bytes to kilobytes
- Bytes to megabytes
- Bytes to gigabytes
- Bytes to terabytes
- Bytes to bits
- Bytes to petabytes
- Bytes to kibibytes
- Bytes to mebibytes
- Bytes to gibibytes
- Bytes to tebibytes
- Bytes to kilobits
- Bytes to megabits
- Kilobytes to pebibytes
- Megabytes to pebibytes
- Gigabytes to pebibytes
- Terabytes to pebibytes
See all digital storage units.