Megabytes and Gigabytes Converter

Use this calculator to convert megabytes (MB) to gigabytes (GB) and gigabytes to megabytes. This converter is part of the full data storage converter tool.

Converting gigabytes and megabytes

In the conversion tables below, figures are rounded to a maximum of 5 decimal places (7 with smaller numbers) to give approximations.

How many megabytes are there in 1 gigabyte?

There are 1000 megabytes in 1 gigabyte. To convert from gigabytes to megabytes, multiply your figure by 1000 (or divide by 0.001) .

How many gigabytes are there in 1 megabyte?

There are 0.001 gigabytes in 1 megabyte. To convert from megabytes to gigabytes, multiply your figure by 0.001 (or divide by 1000) .

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What is a gigabyte?

A gigabyte is the equivalent of 1,000,000,000 bytes. Still, many fields of computer science will refer to this number as 1,073,741,824 (1,024^3) bytes. This second figure will often be used when speaking about different sizes of RAM within an operating system. To make sense out of this large figure, let's use it in reference:

• 1 gigabyte is 1,000 megabytes.
• 1 gigabyte is 1,000,000 kilobytes.

So, we can see how these numbers will exponentially add up. This should come as no surprise, as the typical storage capacity of a smartphone is now generally between 2 and 4 gigabytes. That is a lot of bytes!

What is a megabyte?

Most computer users are very familiar with the megabyte. As you might have already guessed, a megabyte is the equivalent of 1,000,000 bytes (or 10^6 bytes). We should point out that there is more than meets the eye here. While the SI definition is one million bytes of information, many computing professionals will instead use the more precise number of 1,048,576 bytes (1,024^2). This arises from the binary multiples that occur (each byte contains eight bits of information within its string).

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