Gigabytes to megabytes – and megabytes to gigabytes
1 GB = 1,000 MB
All units in this category
- 8,000,000,000bit
- 1,000,000,000B
- 1,000,000kB
- 1,000MB
- 1GB
- 0.001TB
- 976,562.5KiB
- 953.67432MiB
- 0.93132257GiB
- 0.0009094947TiB
- 8,000,000kbit
- 8,000Mbit
- 8Gbit
Formula
Multiply the value in gigabytes by 1,000 to get megabytes.MB = GB × 1,000
Multiply the value in megabytes by 0.001 to get gigabytes.GB = MB × 0.001
How to convert gigabytes to megabytes
Type a value in the field above and the result is calculated instantly. Use the arrow button to swap direction, or pick other units from the lists.
Gigabytes to megabytes – common values
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 4 | 4,000 |
| 8 | 8,000 |
| 16 | 16,000 |
| 32 | 32,000 |
| 64 | 64,000 |
| 128 | 128,000 |
| 256 | 256,000 |
| 512 | 512,000 |
Megabytes to gigabytes – common values
| Megabytes (MB) | Gigabytes (GB) |
|---|---|
| 10 | 0.01 |
| 20 | 0.02 |
| 40 | 0.04 |
| 80 | 0.08 |
| 160 | 0.16 |
| 320 | 0.32 |
| 640 | 0.64 |
| 1,280 | 1.28 |
| 2,560 | 2.56 |
| 5,120 | 5.12 |
About the units
Gigabytes. A gigabyte is a thousand million bytes under the SI prefix giga. The binary counterpart, the gibibyte, is 1,073,741,824 bytes, 7.4% more. The unit measures storage, memory and mobile data, and it is not regulated in the EU. Here is the classic trap of the category: drive makers count decimally, so a 1 TB drive is 10¹² bytes, while Windows shows the same drive in binary but writes “GB” – and the figure comes out as 931. Gigabyte against gigabit is a factor of eight.
Megabytes. A megabyte is a million bytes under the SI prefix mega. The binary counterpart, the mebibyte, is 1,048,576 bytes, 4.9% more, and the megabyte is the very example the American standards body NIST uses: memory makers mean 2²⁰ bytes, storage makers 10⁶. The unit measures photographs, apps, email attachments and mobile data allowances. Two traps. Megabyte against megabit is a factor of eight, so 100 megabits gives 12.5 megabytes per second. And operating systems often write MB while counting mebibytes.