tib

IPA/ˈteb.ɪ.baɪt/
IPA/ˈteb.ɪ.baɪt/

tib — noun

  • tibsingular
  • tibsplural

1. a standard unit for measuring the size of digital data in computing, equal to 1,

1.nounB2
Definition

a standard unit for measuring the size of digital data in computing, equal to 1,024 gibibytes (approximately one point one trillion bytes); short for tebibyte

Example

Ryan's new external drive holds two tib of data, enough for several hundred movies.

collocation: [number] + tib + of + [data/space]

The cloud backup service gives each user five tib of storage for a monthly fee.

Common collocations
  • [number] + tib + of + storage / data / space
  • [number] + tib + memory card / hard drive / drive
  • take up + [number] + tib
  • [number] + tib + per hour / per second
Synonyms
  • tebibyte

    full name; 'tib' is the symbol (like 'kg' for kilogram)

Usage Note

Often written as TiB. One tib (tebibyte) is slightly larger than one terabyte (TB) — 1 TiB equals about 1.1 TB. Operating systems typically report storage space in tib, not TB, which is why a '1 TB' hard drive may show less space than expected.

Common Mistakes

My computer has 500 GB of storage, which is about 0.5 tib.
My computer has 500 GB of storage, which is about 0.47 tib.
A gigabyte (GB) is a decimal unit; 500 GB ≈ 465 gibibytes, and 465 GiB ÷ 1,024 ≈ 0.454 TiB. The conversion between decimal and binary units is not a simple 1:1 ratio.

Word family

  • tebibyte
    nounB2
  • gibibyte
    nounC1
  • mebibyte
    nounC1

Synonym discussion

Sense: noun/1

Tib, TiB, and tebibyte all refer to the same binary unit of measurement (1,024 gibibytes). 'tib' and 'TiB' are the symbol/abbreviation (like 'cm' for centimetre), while 'tebibyte' is the full name used in formal writing. The key confusion learners face is between tebibyte (TiB) and terabyte (TB). A terabyte uses decimal (1 TB = 1 trillion bytes), whereas a tebibyte uses binary (1 TiB ≈ 1.1 trillion bytes). In practice, hard-drive manufacturers advertise in TB, but operating systems such as Windows and macOS report capacity in TiB. People who buy a '1 TB' drive and see only about 931 GB of usable space are seeing the difference between the two units. Use 'TiB' or 'tib' when precision and the binary standard matter; use 'TB' when discussing consumer storage products.

tib ↗TiB ↗tebibyte ↗terabyte ↗TB ↗

Common collocations

Nouns

Phrases

  • [number] tib of [noun]
  • [number]-tib [noun]

Prepositions

Etymology

EnglishIEC-coined (1998)

The unit symbol 'tib' (and its full form 'tebibyte') was created in 1998 by the International Electrotechnical Commission (IEC) to solve a long-standing confusion in computing. The prefix 'tebi-' blends 'tera' (the decimal prefix for 10¹²) with 'binary', producing a set of binary multipliers: kibi (2¹⁰), mebi (2²⁰), gibi (2³⁰), tebi (2⁴⁰), and so on. Before this standard existed, the word 'terabyte' was used for both 10¹² bytes and 2⁴⁰ bytes, causing frequent calculation errors. The IEC binary prefixes are now the official standard in technical documentation and operating systems.