Tebibytes to Petabytes (TiB to PB)

1 tebibyte equals 0.001099511628 petabytes (rounded).

How to convert tebibytes to petabytes

To convert tebibytes to petabytes, multiply the number of tebibytes by 0.001099511628. The factor is rounded to 10 significant digits. To go the other way, multiply petabytes by 909.4947018 (rounded).

petabytes = tebibytes × 0.001099511628

Example: 10 tebibytes = 0.01099511628 petabytes.

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

Tebibyte (TiB)

ComputingCurrent unit

Exactly 2⁴⁰ bytes, about 9.9% larger than a terabyte.

At tera scale the two systems drift furthest apart among the common units. The tebibyte equals 2 to the fortieth bytes, or 1,099,511,627,776 bytes, and the IEC created the bi prefixes in 1998 to separate powers of 1,024 from SI powers of 1,000. A power-of-10 terabyte is about 9 percent smaller than a tebibyte, so the gap has more than tripled since the kibibyte, which is only about 2.4 percent larger than a kilobyte.

Practical consequences are visible on any new drive. A 1 TB drive may be reported as about 931 GB by an operating system that counts in binary but labels it GB. Some systems use TB for 1,024 to the fourth bytes, but the JEDEC standard does not mention TB or larger units. The unit is defined in IEC 80000-13, and its TiB symbol is rarely used outside tools such as KDE and Qt-based applications.

1 tebibyte = 1,099,511,627,776 bytes (exactly).

Sources: Wikipedia: Tebibyte; Wikipedia: Terabyte; NIST: Prefixes for binary multiples

Petabyte (PB)

ComputingCurrent unit

1,000 terabytes (10¹⁵ bytes). The scale of large data centers.

Peta entered the SI in 1975, when the General Conference on Weights and Measures approved peta and exa in its Resolution 10. A petabyte is 10 to the fifteenth bytes, or 1,000 terabytes, and the word is formed by attaching that prefix to byte, a term Werner Buchholz coined in June 1956 as a deliberate respelling of bite. The binary counterpart is the pebibyte: the IEC amendment published in January 1999 added pebi and exbi to the earlier binary names.

Decimal units dominate at this size: hard drives, SSDs, optical discs and network contracts all use powers of 1,000, and macOS, iOS, Android and Ubuntu follow suit. As an example of the size, one petabyte is about 2,000 years of MP3-encoded music at roughly one megabyte per minute. Binary use of the P symbol is less common than for smaller prefixes.

1 petabyte = 1×10¹⁵ bytes (exactly).

Sources: Wikipedia: Petabyte; BIPM: SI prefixes; Wikipedia: Binary prefix

Related conversions

See all digital storage units.