›› Measurement unit: terabyte

Full name: terabyte

Plural form: terabytes

Symbol: TB

Category type: computer data storage

Scale factor: 1099511627776

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›› Definition: Terabyte

A terabyte (commonly abbreviated TB) is a measurement term for data storage capacity.

The number of bytes in a terabyte is sometimes stated to be approximately 1.0995 1012. This difference arises from a conflict between the long standing tradition of using binary prefixes and base 2 in the computer world, and the more popular decimal (SI) standard adopted widely both within and outside of the computer industry. Standards organizations such as IEC, IEEE and ISO recommend to use the alternative term tebibyte (TiB) to signify the traditional measure of 10244 bytes, or 1024 gibibytes.

The capacities of computer storage devices are typically advertised using their SI standard values, but the capacities reported by software operating systems uses the binary values. A NTFS formatted terabyte hard drive shows 931 gigabytes of free, usable storage space under Windows XP.

Most users prefer to calculate unit conversions using the binary definition, so this site uses non-SI units.

›› Sample conversions: terabyte

terabyte to mebibyte
terabyte to exabyte
terabyte to gigabit
terabyte to gibibit
terabyte to bit
terabyte to kilobyte
terabyte to petabyte
terabyte to megabyte
terabyte to kibibit