GB to MB Converter
Convert gigabytes to megabytes instantly and free. Enter a GB value and the MB result appears as you type, in both the binary and decimal systems, with nothing to install and no sign up.
Need the other direction? Use MB to GB instead.
Quick answer
To convert GB to MB, multiply the gigabytes by 1,024. So 2 GB is 2,048 MB. Phone carriers and storage makers multiply by 1,000 instead, which makes the same 2 GB read as 2,000 MB. Both are correct, they simply use different systems, and the converter above gives you either one.
Is GB bigger than MB?
Yes, and by a wide margin. One gigabyte holds 1,024 megabytes, so a 4 GB video is about four thousand times larger than a 4 MB photo. Asked in reverse, is a gigabyte bigger than megabyte, the answer is the same: GB wins. If you are still unsure whats bigger mb or gb, remember the order runs byte, kilobyte, megabyte, gigabyte, terabyte, with each step roughly a thousand times larger than the one before it.
MB = GB × 1024
Binary, used by Windows and macOS. For decimal, multiply by 1,000 instead.
How to convert GB to MB
Enter your GB value
Type the number of gigabytes into the converter above. Decimals are fine.
Read the MB result
The megabyte value updates as you type. Nothing to click and nothing to submit.
Swap if you need to
Use the swap button to go the other way and turn MB back into GB.
Copy the answer
Take the result straight into your data plan, upload limit or storage plan.
GB to MB conversion table
| Gigabytes | Megabytes (binary) |
|---|---|
| 0.5 GB | 512 MB |
| 1 GB | 1,024 MB |
| 2 GB | 2,048 MB |
| 4 GB | 4,096 MB |
| 8 GB | 8,192 MB |
| 16 GB | 16,384 MB |
| 32 GB | 32,768 MB |
| 64 GB | 65,536 MB |
| 128 GB | 131,072 MB |
Why two different answers exist
Computers count in binary, so an operating system treats one gigabyte as 1,024 megabytes. Storage makers, mobile networks and most upload forms use the decimal meaning of giga, which is 1,000. That difference is why a drive sold as 500 GB shows up as roughly 465 GB. The strict binary unit has its own name, the gibibyte, defined by the IEC binary prefixes, but nobody uses it in everyday language.
When you actually need this
The usual reason is a data plan or a storage limit. A carrier sells 20 GB a month but reports usage in MB, a cloud plan caps a single upload at 500 MB, or a game download is quoted in one unit and your free space in the other. Converting first tells you whether you have room. If you need to free some up, our image compressor and PDF compressor both shrink files without an upload.
Why use this converter
Free and unlimited
No account, no daily cap, no watermark on anything.
Answer as you type
The result updates live, so there is no convert button to wait on.
Nothing is uploaded
The maths runs in your browser. No value is sent anywhere.
Works everywhere
Any modern browser on desktop, tablet or phone.
Convert other data units
Working with smaller files? Use KB to MB. Going up the scale, try MB to GB or GB to TB. For length, weight, temperature and speed in one place, the universal unit converter handles them all.
Frequently asked questions
Is GB bigger than MB?
How many MB are in 1 GB?
Is a gigabyte bigger than megabyte?
Whats bigger mb or gb?
How many MB is 4096 MB in GB?
Is this GB to MB converter free?
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