how many megabytes are in a giggabyte?

Answer 1

1024MB = 1 GB

Answer 2

1 megabytes = 0.0009765625 gigabytes
so
1 Gigabyte X 1024 (gigabytes to megabytes) = 1,024 Megabytes

Answer 3

1024

Answer 4

1024

Answer 5

1024

Answer 6

1024

Answer 7

Mega means a million, and giga means a billion (in the United States), or one milliard (in Europe). It follows that there are a thousand megabytes in a gigabyte. However, in computer science, by convention, we take that to mean 1,024, which is 2^10, because of its proximity to 1,000.

For another way to see this, in computer science, one megabyte is 1,048,576 bytes, and one gigabyte is 16,777,216 bytes, and theiir quotient is 1,024.

In other fields (e.g. physics), there would only be 1,000 meta-things in one giga-thing. Example: There are 1,000 megahertz in one gigahertz.

Answer 8

1024, I think. The prefixes mega, giga, etc. usually refer to powers of 10--kilo is 1,000, mega 1,000,000, and giga 1,000,000,000. But computers work in base-2, not base-10, and so they don't work in powers of 10. 1024 is a power of 2 (it's 2^10), and it's close enough to 1000 that you could call 1024 bytes a kilobyte and so on.

Answer 9

2^10 or 1024 MB

Answer 10

1 GB = 1024 MB = 2^10 MB

Answer 11

Above answers are not always true. Usage is inconsistent. Computer memory (RAM) uses powers of 2 to measure, so a megabyte of RAM is 2^20 bytes. In other contexts, such as disk space, it is 10^6 bytes.

I know this because I am a programmer who has written kernel code for different OSs. But, to confirm, I checked on wiki, which actually gives 3 values ( http://en.wikipedia.org/wiki/Megabyte )

1) 1,048,576 bytes (1,024^2, 2^20): This definition is used for nearly all discussions of computer memory (as computer addresses are naturally powers of two, making it efficient to manufacture memory in power-of-two capacities) and file storage. As of 2005, most software uses this definition to express storage capacity (e.g. file size).

2) 1,000,000 bytes (1,000^2, 10^6): This is the definition recommended by SI and IEC. It is used primarily in networking contexts and most storage media, particularly hard drives and DVDs. This definition of 'mega-' as a SI prefix is consistent with the other SI prefixes, and with many other uses of the prefix in computing, such as CPU clock speeds or measures of performance.

3) 1,024,000 bytes (1,024×1,000): This definition occurs rarely. It was used in a small number of storage contexts, most notably the "1.44 MB" (actually 1,474,560 bytes, of which only 1,457,664 bytes are usable on a Windows computer), and the "3.5-inch" (actually 90 mm) high-density floppy diskette.