Cookies for analytics and advertising
We use cookies for analytics and advertising, both sent to Google. Refusing changes nothing you can see.Read the privacy page
Convert MB to GB
1 MB = 0.001 GB
Type a value in megabytes and the answer in gigabytes appears as you go. The conversion is exactly 0.001 GB to the megabyte, and it happens on your own machine — this page asks nothing of a server once it has loaded.
Where it runs
In your browser. The number you type is never part of a request.
Exact by definition
1 MB is exactly 0.001 GB — a definition, not a rounded factor.
Answers as you type
No button, no wait. The worked answer is already on the page before any script runs.
Megabyte and Gigabyte
A megabyte is a million bytes. Storage manufacturers have always used this decimal meaning, which is why their capacities look larger than what a computer reports.
A gigabyte is a billion bytes in the decimal sense used by drive manufacturers, phone plans and video sizes.
megabytes to gigabytes in practice
5 MB is 0.005 GB
— a song at a good bitrate.
4000 MB is 4 GB
— a film at ordinary quality.
megabytes to gigabytes at a glance
| MB | GB |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Every figure here is computed from the same definition the calculator uses, so the table cannot drift away from the answer above it.
Convert MB to GB: common questions
How many gigabytes are in a megabyte?
Exactly 0.001. One megabyte is 0.001 gigabytes, and the box above will do it for any figure you type.
Is this conversion exact, or rounded?
The ratio is exact. It is not a rounded constant typed into a table: it is derived from the definitions of the two units, so it agrees with any other correct converter to as many digits as you care to compare.
Why does another converter show a slightly different number?
Almost always rounding rather than disagreement. Many converters cut the answer to two or four decimals, and some carry a factor that was rounded before the multiplication rather than after. The figures here are computed from the exact definitions and only rounded on the way to the screen.
Where these figures come from
The claims this page makes about data units are checkable, and these are the documents that settle them.
How this page works
The factor is a constant in the page and the arithmetic is four operations, so nothing is sent anywhere and nothing needs to be. The number you type never leaves the browser — there is no request for it to travel in.