Gigabyte to Megabyte Converter
Convert Gigabyte (GB) to Megabyte (MB) instantly. 1 GB = 1,024 MB.
Data Converter
21 units available
1 GB = 1,024 MB
Formula:
MB = GB × 1,024With your value: 1 GB = 1,024 MB
How big is that?
Everyday references on a logarithmic scale, all expressed in gigabyte so you can sanity-check the result.
Other Gigabyte to Megabyte conversions
Gigabyte to Megabyte Conversion Table
| Gigabyte (GB) | Megabyte (MB) |
|---|---|
| 0.5 | 512 |
| 1 | 1,024 |
| 2 | 2,048 |
| 5 | 5,120 |
| 10 | 10,240 |
| 15 | 15,360 |
| 20 | 20,480 |
| 25 | 25,600 |
| 50 | 51,200 |
| 100 | 102,400 |
| 250 | 256,000 |
| 500 | 512,000 |
| 1000 | 1,024,000 |
Megabyte to Gigabyte Conversion Table
| Megabyte (MB) | Gigabyte (GB) |
|---|---|
| 0.5 | 0.000488 |
| 1 | 0.000977 |
| 2 | 0.001953 |
| 5 | 0.004883 |
| 10 | 0.009766 |
| 15 | 0.014648 |
| 20 | 0.019531 |
| 25 | 0.024414 |
| 50 | 0.048828 |
| 100 | 0.097656 |
| 250 | 0.244141 |
| 500 | 0.488281 |
| 1000 | 0.976563 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Gigabyte (GB)
Data
Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.
Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology
International Electrotechnical Commission · Reviewed 2026-07-01
Megabyte (MB)
Data
Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.
Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology
International Electrotechnical Commission · Reviewed 2026-07-01
How to Convert Gigabyte to Megabyte
To convert from Gigabyte (GB) to Megabyte (MB), multiply the value by 1,024.
Formula: MB = GB × 1,024
Reverse: GB = MB × 0.0009765625
Step-by-Step Example
- Start with your value in Gigabyte. For example: 5 GB
- Multiply by the conversion factor: 5 x 1,024
- The result is: 5,120 MB
About Gigabyte
The gigabyte (GB) is a unit of digital storage. One gigabyte equals 1.073742 × 10^+9 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: data calculations, engineering and science, education.
About Megabyte
The megabyte (MB) is a unit of digital storage. One megabyte equals 1.048576 × 10^+6 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: data calculations, engineering and science, education.
Frequently Asked Questions
How many Megabyte are in 1 Gigabyte?
There are exactly 1,024 Megabyte in 1 Gigabyte. This means the conversion factor from Gigabyte to Megabyte is 1,024.
What is the formula to convert Gigabyte to Megabyte?
The formula to convert Gigabyte to Megabyte is: MB = GB × 1,024. For example, to convert 10 Gigabyte to Megabyte, you would multiply 10 by 1,024.
What is a Gigabyte?
The gigabyte (GB) is a unit of digital storage. One gigabyte equals 1.073742 × 10^+9 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Megabyte?
The megabyte (MB) is a unit of digital storage. One megabyte equals 1.048576 × 10^+6 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Gigabyte?
The Gigabyte is commonly used in data calculations, engineering and science, education.
Related Data Conversions
Cite this page
UnitConvertLab. (2026). Gigabyte to Megabyte converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gigabyte-to-megabyte