Convert Gigabytes to Megabytes
GB to MB · digital storage conversion
What are gigabytes and megabytes?
A gigabyte is one billion bytes, about a quarter-hour of HD video. A megabyte is one million bytes, roughly a minute of MP3 audio. For scale: a photo is a few MB, an HD movie a few GB, and a modern drive holds 1 TB or more. These use decimal (1 KB = 1,000 bytes).
How to convert gigabytes to megabytes
1 GB = 1,000 MB. To convert, multiply the number of gigabytes by 1,000. For example, 5 GB = 5,000 MB, and 20 GB = 20,000 MB. To go the other way, multiply megabytes by 0.001 (since 1 MB = 0.001 GB).
Gigabytes to Megabytes conversion table
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 1 | 1,000 |
| 8 | 8,000 |
| 16 | 16,000 |
| 64 | 64,000 |
| 128 | 128,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
FAQ
What is 1 GB in MB?
1 GB = 1,000 MB. To convert any amount, multiply the number of gigabytes by 1,000.
How do I convert megabytes back to gigabytes?
Go the other way: 1 MB = 0.001 GB, so multiply megabytes by 0.001 to get gigabytes.
Is a gigabyte bigger than a megabyte?
Yes — 1 GB is the larger unit, equal to 1,000 MB.
Are these digital storage conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.