Tebibytes to Kibibytes (TiB to KiB)

1 tebibyte equals 1,073,741,824 kibibytes exactly.

1 tebibyte = 1,073,741,824 kibibytes

How to convert tebibytes to kibibytes

To convert tebibytes to kibibytes, multiply the number of tebibytes by 1,073,741,824. This factor is exact. To go the other way, multiply kibibytes by 9.313225746×10⁻¹⁰ (rounded).

kibibytes = tebibytes × 1,073,741,824

Example: 10 tebibytes = 10,737,418,240 kibibytes.

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

Kibibyte (KiB)

ComputingCurrent unit

Exactly 1,024 bytes (2¹⁰). The IEC name for the binary kilobyte, used by operating systems and memory specifications.

Kibibyte is the first of the names the IEC approved in December 1998 for binary multiples, built from kilobinary. The IUPAC's Interdivisional Committee on Nomenclature and Symbols had proposed binary prefixes in 1995, and the IEC published them in January 1999. The symbol KiB adds an i to the SI symbol, with the K capitalized. NIST says the names keep the first two letters of each SI prefix and add bi, to signal binary.

One KiB is exactly 1,024 bytes, about 2.4 percent more than a kilobyte. The standard is now IEC 80000-13, supported by the BIPM, IEC and NIST. In practice the symbols are rarely used outside a few places such as KDE and Qt-based applications, which can switch between SI and binary units. Donald Knuth jokingly suggested in 1999 calling it a large kilobyte, KKB.

1 kibibyte = 1,024 bytes (exactly).

Sources: NIST: Prefixes for binary multiples; Wikipedia: Kibibyte

Related conversions

See all digital storage units.