Gigabytes to Megabytes Converter
Convert gigabytes to megabytes (GB to MB) quickly and accurately.
Quick conversion table
| Gigabytes | Megabytes |
|---|---|
| 1 GB | 1,024 MB |
| 2 GB | 2,048 MB |
| 4 GB | 4,096 MB |
| 8 GB | 8,192 MB |
| 16 GB | 16,384 MB |
| 32 GB | 32,768 MB |
| 64 GB | 65,536 MB |
| Gigabytes | Megabytes |
|---|---|
| 100 GB | 102,400 MB |
| 128 GB | 131,072 MB |
| 256 GB | 262,144 MB |
| 500 GB | 512,000 MB |
| 512 GB | 524,288 MB |
| 1,000 GB | 1,024,000 MB |
| 1,024 GB | 1,048,576 MB |
About this tool
The gigabyte (GB) and megabyte (MB) are units of digital storage capacity, used for file sizes, RAM and storage drives.
This converter follows the binary convention used by Windows and many other tools, where 1 gigabyte equals 1,024 megabytes (2¹⁰) rather than the 1,000 MB of decimal (SI) counting, which macOS has used since 2009.
Knowing this distinction helps explain everyday mysteries like why a video file's reported size in an editing app can differ slightly from what your file explorer shows.
Worked example
- 1Start with your value in gigabytes. For example, 4 GB.
- 2Apply the formula: 1 GB = 1024 MB.
- 34 GB converts to 4,096 MB.
Formula
1 GB = 1024 MB
Related tools
Frequently asked questions
- How do I convert gigabytes to megabytes?
- To convert gigabytes to megabytes, apply the formula: 1 GB = 1024 MB.
- What is 1 GB in megabytes?
- 1 GB is equal to 1,024 MB.
- What is 10 GB in megabytes?
- 10 GB is equal to 10,240 MB.
- What is 100 GB in megabytes?
- 100 GB is equal to 102,400 MB.
- Is 1 GB always equal to 1024 MB?
- Not universally — it depends on the convention. Windows and many tools use the binary definition (1 GB = 1,024 MB), while storage manufacturers, macOS and network speeds use the decimal definition (1 GB = 1,000 MB). This tool uses the binary convention.