MB to GB Converter
Convert MB to GB for file sizes, video downloads, mobile data plans and cloud storage limits. 1000 MB = 1 GB (decimal) or 1024 MB = 1 GiB (binary), both shown.
Last updated: May 2026
Type any MB value above to see how many GB it fills, plus the binary GiB figure your OS may show instead.
Also convert to:
How to convert megabytes to gigabytes
Your phone says a video is 847 MB. Your cloud plan shows 0.5 GB remaining. Can you upload it? That question is exactly where MB-to-GB conversion earns its place: the numbers are the same thing measured at two different scales, and one quick division tells you where you stand.
Divide megabytes by 1000 to get gigabytes: gigabytes = megabytes ÷ 1000. So 847 MB is 0.847 GB, and it fits in 0.5 GB with a little squeezing, which it does not. Move something out first. On this page, 1 MB = 0.001 GB.
Quick reference
| MB | GB |
|---|---|
| 100 | 0.1 |
| 1 | 0.001 |
| 500 | 0.5 |
| 1000 | 1 |
| 5000 | 5 |
MB to GB for everyday file and data sizing
The MB-to-GB conversion comes up most often at the point where a file is too big or just barely fits. You are deciding whether a batch of holiday photos (say, 2400 MB of JPEGs from a DSLR) will clear the 2.5 GB cap on a free cloud account. Or you are watching a mobile data bar drop and wondering how many 180 MB podcast downloads remain before you hit the carrier's 5 GB monthly ceiling. In both cases you are comparing a number in MB against a limit listed in GB, and you need the conversion to be quick and reliable.
A secondary use is sanity-checking product listings. A microSD card sold as "64 GB" holds 64,000 MB by the decimal measure that manufacturers use on packaging. Format the card and your phone's file manager may show slightly less because the OS works in binary, reporting gibibytes (GiB) rather than gigabytes (GB). The numbers look smaller even though no space disappeared.
Common mistake: not knowing which GB your context uses. Mobile carriers and drive manufacturers count 1 GB as exactly 1000 MB (decimal). Some older software and operating system storage panels still count 1 GB as 1024 MB (binary). That 2.4% gap seems small but it adds up: a file your carrier calls 4.7 GB is only 4.38 GiB in binary terms. If you are bumping against a carrier data cap, use the decimal figure (divide by 1000). If you are checking free space in Windows Explorer or macOS Finder, note which unit the panel is actually showing, because the two are not interchangeable. This page divides by 1000, matching the convention used by carriers, cloud services, and drive packaging.
Frequently Asked Questions
My phone shows 1.8 GB free but the file I want to save is listed as 1900 MB. Will it fit?
It depends on which definition of GB your phone is using. If the file manager reports decimal GB (1 GB = 1000 MB), then 1.8 GB is 1800 MB and the 1900 MB file does not fit. If the phone reports binary GiB (1 GiB = 1024 MB), then 1.8 GiB is about 1843 MB and the file still does not fit. Either way you need to free up space first. Convert the file size using this page and compare it to the available figure shown on screen, keeping in mind that your phone's storage readout and the file listing may use slightly different bases.
Why does my carrier say I have used 4 GB but my phone's settings panel shows only 3.7 GB used?
Carriers bill in decimal gigabytes (1 GB = 1000 MB), so 4 GB of carrier data is 4000 MB. Your phone may display that in binary-style gibibytes (1 GiB = 1024 MB), which makes 4000 MB appear as roughly 3.73 GiB. The actual data transferred is identical. The discrepancy is a unit label difference, not a billing error, and it grows the more data you use. Always check your carrier's own data-usage page for the authoritative decimal GB figure against your plan cap.
I am uploading photos to a service that allows 15 GB. How many 8 MB photos fit?
Divide the quota by the per-file size: 15 GB is 15,000 MB in decimal, so 15,000 divided by 8 MB per photo is 1875 photos. That is a rough ceiling. In practice, services often use decimal GB for quota but count your files in bytes, so the limit is exact rather than approximate. Convert your estimated total MB to GB with this page and compare it to the quota before you hit the upload limit mid-batch.
Does this converter use 1000 MB per GB or 1024 MB per GB?
This converter uses 1000 MB per GB, the decimal standard that carriers, cloud providers, and storage manufacturers use for labeling and billing. The GiB figure shown in the secondary outputs below the converter uses 1024 as the base, which is the binary standard some operating systems use internally. Both results appear side by side so you can match whichever context you are working in.
A video editor told me a 4K clip is about 400 MB per minute. How long a clip fits on 2 GB of spare space?
Convert 2 GB to MB first: 2 times 1000 equals 2000 MB. Divide by 400 MB per minute and you get 5 minutes of footage. If your editing software uses binary units and reports 2 GiB of free space, that is 2048 MB, giving you about 5.1 minutes. The difference at this scale is small, but for a one-hour shoot (roughly 24 GB) it adds up to nearly 600 MB of discrepancy between what a drive claims and what the software sees.