Convert Gigabyte to Megabyte
Turn Gigabytes into Megabytes in an instant. Type a value below to get an accurate GB → MB result, with the formula and a quick-reference table.
1 GB = 1,000 MB
Quick answer: 1 Gigabyte = 1,000 Megabyte
Gigabyte to Megabyte conversion table
| Gigabyte (GB) | Megabyte (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 |
| 50 GB | 50,000 MB |
| 100 GB | 100,000 MB |
| 500 GB | 500,000 MB |
| 1,000 GB | 1,000,000 MB |
How to convert Gigabyte to Megabyte
To convert Gigabytes to Megabytes, multiply the value by 1,000.
- Take your measurement in Gigabytes.
- Multiply it by 1,000 — the number of Megabytes in one Gigabyte.
- The result is the same amount, expressed in Megabytes.
To go the other way, multiply Megabytes by 0.001 — or simply divide by 1,000.
For example, an HD movie is about 5 GB, which is 5,000 MB.
About Gigabyte and Megabyte
A gigabyte is 1,000 megabytes (one billion bytes). It sizes movies, phone storage and mobile data plans.
A megabyte is 1,000 kilobytes (one million bytes). It sizes photos, songs and small app downloads.
Both the Gigabyte and the Megabyte are decimal (SI) units, so converting between them is just a change of scale: one Gigabyte equals 1,000 Megabytes, and the Gigabyte is the larger unit.
Other data storage conversions
Frequently asked questions
How many Megabytes are in a Gigabyte?
1 Gigabyte equals 1,000 Megabyte (GB → MB). To convert any amount, multiply the number of Gigabytes by 1,000.
How do I convert Gigabyte to Megabyte?
Enter the number of Gigabytes in the converter above and read the result in Megabytes. It applies the exact GB → MB factor instantly, with full precision.
Is the Gigabyte to Megabyte converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined data storage factors and full floating-point precision, then rounds the display to a clean, readable number.