1 megabyte (1000²) = 0.001 GB
1 MB = 0.001 GB · type math like (12*4)+6.5
MB to GB helps you understand how many files fit on a drive or within a data cap. It is useful when summing app sizes, email attachments or photo libraries.
Cloud storage quotas are given in GB, but files are measured in MB. A Google account's 15 GB free storage is 15,000 MB. If your photos average 4 MB, that is about 3,750 photos.
Email services limit attachments in MB. Outlook allows 20 MB and Gmail 25 MB, which is 0.02–0.025 GB. Larger files are usually shared through cloud links instead.
Data usage reports on phones often show MB for apps and GB for the total. If social media used 850 MB, video 2,300 MB and maps 150 MB, the total is 3,300 MB, or 3.3 GB.
When planning storage for documents, remember that most office files are under 1 MB. 1 GB can hold over 1,000 typical documents.
Note that some systems use 1,024 MB per GB. In that case 3,300 MB would show as 3.22 GB.
Older storage limits are often expressed in megabytes. A CD holds 700 MB, which is 0.7 GB, and a 3.5 inch floppy disk held 1.44 MB, which is 0.00144 GB. Comparing them with today's 512 GB phones shows how far storage has come.
Website owners measure page weight in MB. A web page of 2.5 MB loaded 10,000 times a month uses 25,000 MB, or 25 GB, of bandwidth. Hosting plans with a 100 GB monthly limit can then serve about 40,000 such page views.
Phone apps list download sizes in MB. If you install ten apps of 150 MB each, that is 1,500 MB, which is 1.5 GB of storage, before the apps save any data. Messaging apps can quietly grow to several GB as photos and videos accumulate.
Music libraries are a classic example. A typical MP3 at 256 kbps uses around 8 MB for a 4 minute song. A library of 2,000 songs is about 16,000 MB, or 16 GB. Lossless files are about four times bigger, so the same library would need around 64 GB.
To check an answer, move the decimal point three places to the left: 4,500 MB becomes 4.5 GB and 75 MB becomes 0.075 GB. If your result is slightly smaller, such as 4.39 GB for 4,500 MB, you divided by 1,024 and produced a binary figure. File managers on Windows show binary values, while macOS and most phones use decimal values, so the same file can appear with two different sizes.
GB = MB × 0.001
Reverse: 1 GB = 1 000 MB.
Convert 3,500 MB to GB.
Answer: 3,500 MB = 3.5 GB.
| MB | 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 |
| 6 MB | 0.006 GB |
| 7 MB | 0.007 GB |
| 8 MB | 0.008 GB |
| 9 MB | 0.009 GB |
| 10 MB | 0.01 GB |
| 11 MB | 0.011 GB |
| 12 MB | 0.012 GB |
| 13 MB | 0.013 GB |
| 14 MB | 0.014 GB |
| 15 MB | 0.015 GB |
| MB | GB |
|---|---|
| 16 MB | 0.016 GB |
| 17 MB | 0.017 GB |
| 18 MB | 0.018 GB |
| 19 MB | 0.019 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 |
| 75 MB | 0.075 GB |
| 100 MB | 0.1 GB |
| 250 MB | 0.25 GB |
| 500 MB | 0.5 GB |
| 1 000 MB | 1 GB |
3,500 MB of photos is 3.5 GB.
Gmail's 25 MB attachment limit is 0.025 GB.
A 850 MB update is 0.85 GB.
That gives GiB. For GB divide by 1,000.
An 800 Mb file is 100 MB, or 0.1 GB.
500 MB is 0.5 GB, not 5 GB.
A megabyte (MB) is 1,000,000 bytes.
Origin. Mega- is the SI prefix for one million; the IEC clarified its decimal storage meaning in 1998.
Used today. File and attachment sizes.
A gigabyte (GB) is 1,000,000,000 bytes, using the decimal SI prefix giga.
Origin. Decimal prefixes for storage became standard in the hard drive industry in the 1980s and were confirmed by the IEC in 1998.
Used today. Storage capacity and data plans.
1 GB.
0.5 GB.
Often 1,000–3,000 MB (1–3 GB) in HD.
No. 1 GB equals 1,000 MB.