Direct conversion
Convert gigabyte [GB] to megabyte [MB] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 gigabyte [GB] = 1000 megabyte [MB]
1 gigabyte [GB] = 1000 megabyte [MB]
Example: 1 gigabyte [GB] equals 1000 megabyte [MB].
Data storage conversions use byte as the reference unit and include both decimal and binary multiples.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The gigabyte is a digital storage unit commonly equal to one billion bytes in decimal usage.
HistoryGigabytes became mainstream with larger hard drives, memory cards, phones, and cloud storage.
Current useGigabytes are used for phone storage, laptops, video files, games, backups, and monthly data plans.
The megabyte is a digital storage unit commonly equal to one million bytes in decimal usage.
HistoryMegabytes became common as computer memory, software, and file sizes grew beyond kilobytes.
Current useMegabytes are used for photos, documents, apps, email attachments, mobile data, and downloads.
| gigabyte [GB] | megabyte [MB] |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 1000 | 1000000 |
Use this formula: 1 gigabyte [GB] = 1000 megabyte [MB] Enter your value in the calculator and the result updates instantly.
1 gigabyte [GB] equals 1000 megabyte [MB].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.