Megabytes to Gigabytes
Convert megabyte to gigabyte instantly — type a value and read the result, with the exact formula shown.
Reviewed by the CalcCafe editorial team · Last updated 1 July 2026 · How we test our tools
Example
1 MB = 0.001 GB, 5 MB = 0.005 GB, 10 MB = 0.01 GB.
Common conversions: megabyte to gigabyte
Quick reference for the MB → GB values you are most likely to need, computed with the exact factor the converter above uses. It includes the specific values people most often look up (1,024 MB, 1,000 MB, 4,000 MB, 10,000 MB, 100,000 MB). See also the reverse converter: Gigabyte to Megabyte.
| Megabyte (MB) | Gigabyte (GB) |
|---|
| 1 MB | 0.001 GB |
| 2 MB | 0.002 GB |
| 3 MB | 0.003 GB |
| 4 MB | 0.004 GB |
| 5 MB | 0.005 GB |
| 10 MB | 0.01 GB |
| 15 MB | 0.015 GB |
| 20 MB | 0.02 GB |
| 25 MB | 0.025 GB |
| 30 MB | 0.03 GB |
| 40 MB | 0.04 GB |
| 50 MB | 0.05 GB |
| 60 MB | 0.06 GB |
| 70 MB | 0.07 GB |
| 75 MB | 0.075 GB |
| 80 MB | 0.08 GB |
| 90 MB | 0.09 GB |
| 100 MB | 0.1 GB |
| 150 MB | 0.15 GB |
| 200 MB | 0.2 GB |
| 250 MB | 0.25 GB |
| 500 MB | 0.5 GB |
| 1,000 MB | 1 GB |
| 1,024 MB | 1.024 GB |
| 2,048 MB | 2.048 GB |
| 4,000 MB | 4 GB |
| 5,000 MB | 5 GB |
| 10,000 MB | 10 GB |
| 100,000 MB | 100 GB |
Gigabyte to Megabyte
| Gigabyte (GB) | Megabyte (MB) |
|---|
| 1 GB | 1,000 MB |
| 5 GB | 5,000 MB |
| 10 GB | 10,000 MB |
| 50 GB | 50,000 MB |
| 100 GB | 100,000 MB |
How it works
Gigabyte = Megabyte × 0.001. Every value is converted through a single byte base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Converting megabytes to gigabytes is one of the most common everyday data calculations, whether you are checking how much of a mobile data plan a 700 MB video stream will eat, totalling up email attachments against a cloud storage cap, or estimating whether a folder of photos will fit on a USB drive. Because file sizes are reported in MB but storage and data caps are usually sold in GB, you constantly need to move between the two to compare apples to apples.
Both units belong to the metric (SI) family of prefixes, where "mega" means one million and "giga" means one billion. In the decimal convention used here, 1 GB equals 1,000 MB, so a megabyte is one-thousandth of a gigabyte. This is the system carriers, drive manufacturers, and most operating systems use on labels and bills — it is not an imperial-versus-metric clash, but a base-10 prefix scale.
The rule of thumb is simple: divide MB by 1,000, or just slide the decimal point three places to the left. So 2,500 MB becomes 2.5 GB, and 250 MB becomes 0.25 GB. If you can divide by a thousand in your head, you never need a calculator for a rough answer.
The classic pitfall is mixing decimal and binary units. This converter uses the decimal definition (1 GB = 1,000 MB), but Windows and some apps report sizes in binary, where 1 GiB = 1,024 MiB. That gap is why a "16 GB" drive shows as roughly 14.9 GB in your file manager — about a 7% difference that grows with size. When precision matters, confirm whether your source numbers are decimal GB or binary GiB before trusting the conversion.
Frequently asked questions
How do you convert megabyte to gigabyte?
Multiply the number of megabytes by 0.001 to get gigabytes. For example, 1 MB = 0.001 GB.
What is 1 megabyte in gigabytes?
1 megabyte equals 0.001 gigabytes (1 MB = 0.001 GB).
How many megabytes are in 1 gigabyte?
There are 1,000 megabytes in 1 gigabyte.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many MB are in a GB?
In the decimal (SI) system used by carriers and drive makers, there are 1,000 MB in 1 GB. In the binary system that Windows often uses, 1 GiB equals 1,024 MiB.
Is 1024 MB equal to 1 GB?
It depends on the convention. Under the decimal standard, 1 GB = 1,000 MB, so 1,024 MB is about 1.024 GB. The 1,024 figure comes from binary units (1 GiB = 1,024 MiB), which many operating systems display.
How many MB is 5 GB of data?
5 GB equals 5,000 MB in decimal terms (5 × 1,000). To go the other way, divide MB by 1,000 to get GB.
How much is 500 MB in GB?
500 MB is 0.5 GB, or half a gigabyte. Just divide 500 by 1,000.
Why does my 1 TB drive show less than 1 TB of usable space?
Manufacturers label drives in decimal units (1 TB = 1,000 GB = 1,000,000 MB), but your operating system may count in binary units. The same physical space looks smaller on screen, roughly 7-9% less, which is why a 1 TB drive may show around 931 GB.
Is MB bigger than GB?
No. A gigabyte is larger — 1 GB equals 1,000 MB, so a megabyte is one-thousandth of a gigabyte.
How many photos or songs fit in 1 GB?
As a rough guide, 1 GB (1,000 MB) holds about 200-250 average MP3 songs at roughly 4-5 MB each, or several hundred smartphone photos at 2-5 MB each. Exact counts vary with quality and format.
How do I convert MB to GB quickly without a calculator?
Move the decimal point three places to the left, which is the same as dividing by 1,000. For example, 750 MB becomes 0.75 GB and 3,200 MB becomes 3.2 GB.
Is 1 GB a lot of storage?
For most uses today 1 GB is a small amount, though it still holds plenty of everyday files. It equals 1,000 MB, so a 5 MB photo fits about 200 times, a 4 MB song about 250 times, and a 700 MB standard-definition movie once with room to spare. Modern phones and laptops typically ship with tens or hundreds of gigabytes, so think of 1 GB as a handy unit for data plans and downloads rather than as a lot of space.
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Sources & references
These tools follow our methodology and provide educational estimates only — verify important figures with a qualified professional.