Convert Gigabytes to Megabytes
Convert GB to MB to plan downloads against a data cap, estimate how many photos fit on a memory card, or read storage in finer detail.
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1 GB = 1,000 MB
Quick reference
| Gigabytes | Megabytes |
|---|---|
| 0.5 | 512 MB |
| 1 | 1024 MB |
| 2 | 2048 MB |
| 4 | 4096 MB |
| 8 | 8192 MB |
| 32 | 32 768 MB |
Formula
MB = GB × 1024 (binary, IEC GiB)
Frequently asked questions
- Is 1 GB exactly 1000 MB or 1024 MB?
- Both definitions exist. Software typically uses 1024 (binary, technically GiB); drive marketing uses 1000 (decimal). This converter uses the 1024 binary convention.
- How many MB is an HD movie?
- A 1-hour 1080p video is roughly 1.5 GB, or about 1536 MB. 4K video is several times larger.