How to convert gigabytes to megabytes
MB = GB × 1,000Multiply the value in gigabytes by 1,000. To go the other way, multiply by 0.001 (or divide by 1,000).
A gigabyte is larger than a megabyte: one gigabyte contains 1,000 megabytes.
Worked examples
- 1 gigabyte1 GB × 1,000 = 1,000 MB
- 5 gigabytes5 GB × 1,000 = 5,000 MB
- 10 gigabytes10 GB × 1,000 = 10,000 MB
- 20 gigabytes20 GB × 1,000 = 20,000 MB
- 100 gigabytes100 GB × 1,000 = 100,000 MB
Gigabytes to megabytes conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 0.1 GB | 100 MB |
| 0.25 GB | 250 MB |
| 0.5 GB | 500 MB |
| 1 GB | 1,000 MB |
| 2 GB | 2,000 MB |
| 3 GB | 3,000 MB |
| 4 GB | 4,000 MB |
| 5 GB | 5,000 MB |
| 6 GB | 6,000 MB |
| 7 GB | 7,000 MB |
| 8 GB | 8,000 MB |
| 9 GB | 9,000 MB |
| 10 GB | 10,000 MB |
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 12 GB | 12,000 MB |
| 15 GB | 15,000 MB |
| 20 GB | 20,000 MB |
| 25 GB | 25,000 MB |
| 30 GB | 30,000 MB |
| 40 GB | 40,000 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 |
About the units
Gigabyte (GB)
10⁹ bytes. Phone storage, data plans and RAM are sold in GB. One gigabyte equals 8,000,000,000 bits (b).
Megabyte (MB)
1,000,000 bytes (decimal). A minute of MP3 audio is about 1 MB. One megabyte equals 8,000,000 bits (b).
Frequently asked questions
How many megabytes are in one gigabyte?
There are 1,000 megabytes in one gigabyte, and this value is exact by definition.
How do I convert gigabytes to megabytes?
Multiply the number of gigabytes by 1,000. For example, 10 GB × 1,000 = 10,000 MB.
How many gigabytes are in one megabyte?
One megabyte equals 0.001 gigabytes. That is the reverse factor, 1 ÷ 1,000.
What is 10 gigabytes in megabytes?
10 GB = 10,000 MB.
Is this GB to MB converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.