mega·​byte | \ ˈme-gə-ˌbīt How to pronounce megabyte (audio) \

Definition of megabyte

: 1024 kilobytes or 1,048,576 bytes also : one million bytes

Examples of megabyte in a Sentence

The CD has a storage capacity of 800 megabytes.
Recent Examples on the Web The Commission's price caps started at €0.90 per megabyte, and graded downwards each year. David Meyer, Fortune, 24 June 2021 Not all that long ago, a complex game or software program fit on a 1.4 megabyte floppy disk. Klint Finley, Wired, 4 Apr. 2020 Designed specifically to endure shocks, crushing, drops, dust, and water, the stylish Rugged Mini offers protection from the elements in capacities from one to eight terabytes and boasts transfer speeds of up to 130 megabytes per second. Popular Science, 25 Mar. 2020 Megabits are one-eighth the size of a megabyte (at a rate of 1 megabit per second, for example, a 10MB image would take 80 seconds to download). Patrick Lucas Austin, Time, 21 Feb. 2020 The 286 was a 16-bit CPU that could address up to 16 megabytes of random access memory (RAM) through a 24-bit address bus. Jeremy Reimer, Ars Technica, 29 Nov. 2019 According to figures collected by John McCallum, a computer scientist, a megabyte of data storage in 1956 would have cost around $9,200 ($85,000 in today’s prices). The Economist, 12 Sep. 2019 To be sure, the phone’s 4G speed was still mighty fast, up to 117 megabytes. Hiawatha Bray,, 14 Aug. 2019 In the 1980s, public keys based on lattices were too long, requiring megabytes of data to transmit. Quanta Magazine, 8 Sep. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'megabyte.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of megabyte

1965, in the meaning defined above

History and Etymology for megabyte

from the fact that 1,048,576 (220) is the power of 2 closest to one million

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Time Traveler for megabyte

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The first known use of megabyte was in 1965

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Last Updated

29 Jun 2021

Cite this Entry

“Megabyte.” Dictionary, Merriam-Webster, Accessed 28 Jul. 2021.

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English Language Learners Definition of megabyte

computers : a unit of computer information equal to 1,048,576 bytes


mega·​byte | \ ˈme-gə-ˌbīt How to pronounce megabyte (audio) \

Kids Definition of megabyte

: a unit of computer information storage capacity equal to 1,048,576 bytes

More from Merriam-Webster on megabyte

Nglish: Translation of megabyte for Spanish Speakers

Britannica English: Translation of megabyte for Arabic Speakers


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