Gb to Mb ConverterRight in Your Browser
Convert gigabytes (GB) to megabytes (MB). The gigabyte (GB) is 1,000 megabytes — the scale of phone storage, video files and data plans. The megabyte (MB) is 1,000 kilobytes — the scale of photos, songs and email attachment limits. Everything is calculated locally in your browser — no server, and it works offline.
1000 MB
in megabytes (megabyte)
To convert gigabytes to megabytes, multiply the gigabyte value by 1000.
Switch to Mb to GbGb to Mb Chart
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
Frequently Asked Questions
How many megabytes are in a gigabyte?
One gigabyte equals 1000 megabytes (1 GB = 1000 MB). So to go from gigabytes to megabytes, multiply the gigabyte value by 1000.
What is the formula to convert gigabytes to megabytes?
To convert gigabytes to megabytes, multiply the gigabyte value by 1000. For example, 10 GB is 10000 MB.
What is 256 gigabytes in megabytes?
256 gigabytes — a common phone storage size — is 256000 megabytes. The converter above works for any value, entirely in your browser.
Is the gigabyte to megabyte conversion exact?
The factor used here is the defined value: 1 GB = 1000 MB. Results are rounded to six significant digits for readability, so for high-precision work use the full factor. This converter uses decimal (SI) units — 1 GB = 1,000 MB — the convention drive makers and data plans use. Windows reports binary gibibytes (1 GiB = 1,024 MiB), which is why a "500 GB" drive shows as about 465 GB there. This converter uses decimal (SI) units — 1 MB = 1,000 KB — matching drive labels and macOS. Windows Explorer reports binary mebibytes (1 MiB = 1,024 KiB), so the same file shows a slightly smaller number there.
Every conversion runs 100% in your browser — zero files uploaded, ever.
How to verify it yourself →