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Convert megabytes to gigabytes
Instant, accurate MB → GB conversion with a live converter, table and formula.
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1 megabyte = 0.001 gigabytes
1 gigabyte = 1000 megabytes
megabytes to gigabytes table
| megabytes (MB) | gigabytes (GB) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Formula
gigabytes = megabytes × 0.001.
Example
10 megabytes = 0.01 gigabytes.
What is a megabyte?
A megabyte (MB) is 1,000 kilobytes — about a minute of MP3 audio.
What is a gigabyte?
A gigabyte (GB) is 1,000 megabytes — a few hours of video.
Real-world reference points
A photo is a few MB; an MP3 song ~4 MB; an HD movie ~4 GB; a modern phone stores 128+ GB.
| Reference | megabytes | gigabytes |
|---|---|---|
| E-mail (text only) | 0.02 MB | 0.00002 GB |
| Smartphone photo | 3 MB | 0.003 GB |
| MP3 song | 4 MB | 0.004 GB |
| DVD capacity | 4,700 MB | 4.7 GB |
| HD movie stream | 4,000 MB | 4 GB |
Mistakes to avoid with data conversions
- Megabits vs megabytes: your '100 Mbps' connection downloads at ~12.5 MB/s — ISPs quote bits, files are bytes.
- Decimal vs binary units: drives are sold in decimal GB (10⁹), so a '1 TB' drive shows ~931 'GB' (GiB) in Windows.
- Assuming video size scales with length only — resolution and bitrate matter more than minutes.
Frequently asked questions
How many gigabytes in a megabytes?+
1 megabyte = 0.001 gigabytes.
How do I convert megabytes to gigabytes?+
Enter the value in the megabytes box above and the gigabytes value appears instantly. You can also type in the gigabytes box to convert the other way.
Is this MB to GB converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.