Quick answer: 1 GB = 1,000 MB
About the Gigabytes to Megabytes
There are 1,000 megabytes in one gigabyte, so to convert gigabytes to megabytes multiply by 1,000.
This converter uses decimal units (1 MB = 1,000 KB), the standard for storage, file sizes on Mac and most websites. Windows uses binary units (1 MB = 1,024 KB): use the KiB/MiB/GiB options for that.
How to convert gigabytes to megabytes (GB to MB)
- Enter your numbers (or keep the example).
- The result updates instantly as you type.
- Copy the result, or copy the link: it keeps your numbers so you can share them.
gigabytes to megabytes conversion table
| GB | MB |
|---|---|
| 1 GB | 1,000 MB |
| 2 GB | 2,000 MB |
| 5 GB | 5,000 MB |
| 10 GB | 10,000 MB |
| 20 GB | 20,000 MB |
| 25 GB | 25,000 MB |
| 50 GB | 50,000 MB |
| 75 GB | 75,000 MB |
| 100 GB | 100,000 MB |
| 250 GB | 250,000 MB |
| 500 GB | 500,000 MB |
| 1,000 GB | 1,000,000 MB |
How it's calculated
MB = GB × 1,000
Features
- Instant resultsUpdates as you type.
- Shareable linkThe URL keeps your inputs.
- Reference tableCommon values on this page.
- Works offlineRuns in your browser.
Frequently asked questions
How many megabytes are in 1 gigabyte?
1 GB = 1,000 MB.
How many gigabytes are in 1 megabyte?
1 MB = 0.001 GB.
Is the Gigabytes to Megabytes free?
Yes, the Gigabytes to Megabytes is free with no sign-up, no limits and no ads covering the result.
Does it work on my phone?
Yes. It works in any modern browser on phones, tablets and computers, and keeps working offline once the page has loaded.
Last updated · Processing happens locally in your browser.