What does "mebibyte" mean?

Strictly, 2²⁰ (1024², or 1,048,576) bytes or 2¹⁰ (1024) kibibytes, as opposed to a megabyte.

What is a synonym for "mebibyte"?

Common synonyms include: mib, kibibyte, m, mb, megabyte, megabyte.

Pronounced //ˈmɛbɪˌbaɪt//.

//ˈmɛbɪˌbaɪt// noun

noun ·Rare ·Advanced level

Noun

1
Strictly, 2²⁰ (1024², or 1,048,576) bytes or 2¹⁰ (1024) kibibytes, as opposed to a megabyte.
"At a minimum, a textual (command-line) system requires 256 mebibytes of RAM and a graphical (desktop) system requires 384-512 mebibytes of RAM."
2
a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes wordnet

"At a minimum, a textual (command-line) system requires 256 mebibytes of RAM and a graphical (desktop) system requires 384-512 mebibytes of RAM."

From mebi- + byte.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.