A terabit per second ( Tbit/s or Tbit/s) is a unit of data transfer rate equal to 1,000 gigabits per second, 1,000,000 megabits per second, 1,000,000,000 kilobits per second, or 1,000,000,000,000 bits per second.

Related units

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Another unit of data transmission is the terabyte per second (TB/s, TB/s, or TB/s). As "terabyte" has two possible meanings, the relation of Tbit/s to TB/s can be either of the following:

• Where 1 terabyte is considered 1,000,000,000,000 bytes
  • 1 terabyte per second = 8 Tbit/s.
• Where 1 terabyte is considered 1,099,511,627,776 bytes (as in computer file storage)
  • 1 terabyte per second ≈ 8.80 Tbit/s.

Because of this discrepancy, the use of "bit-rates" is strongly recommended for all discussions of data transfer speeds, as bits per second (bps) is standardized on base-10 numbers.

Another related unit is the tebibit per second:

10¹² bit/s = 1,000,000,000,000 bit/s = 1 Tbit/s (one terabit or one million million bits per second)

2⁴⁰ bit/s = 1,099,511,627,776 bit/s = 1 Tibit/s (one tebibit per second)

See also

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• terabit/tebibit
• terabyte/tebibyte

External links

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• Terabit — whatis.techtarget.com Definitions

Telecommunications terms | Units of flow