Data Converter
Convert between megabytes and gigabytes instantly using binary (base-2) units. Type a value in either box and the other updates in real time.
Result
1024 MB = 1 GB
Uses binary base-2 units (1024), not decimal (1000).
How to use this converter
- 1
Enter a value in the Megabytes box — for example 1024 MB.
- 2
Read the Gigabytes result, or type in the Gigabytes box to convert the other way.
- 3
Use Swap units to flip the direction, or clear a box to start over.
Understanding MB and GB (base-2)
Computer storage is measured in powers of two, where 1 GB equals 1024 MB (not 1000). This is the binary, or IEC, definition used by operating systems like Windows and macOS. Some manufacturers use decimal units (1 GB = 1000 MB), which is why a drive labelled 1 TB may show slightly less capacity in your OS. For time-based conversions, try the time converter, or for length see the length converter.
Common conversions
| Unit | Equivalent |
|---|---|
| 1 KB | 1,024 bytes |
| 1 MB | 1,024 KB |
| 1 GB | 1,024 MB |
| 1 TB | 1,024 GB |
| 1 byte | 8 bits |
Frequently asked questions
How many megabytes are in a gigabyte?
This converter uses binary units, where 1 GB equals 1,024 MB.
Why do storage manufacturers sometimes use 1,000 MB per GB?
Drive manufacturers commonly use decimal SI units, while many operating systems report storage using binary multiples. The two conventions produce different displayed capacities.
What is the difference between a bit and a byte?
A byte contains 8 bits. Internet speeds are often stated in bits per second, while file sizes are usually stated in bytes.
Does this converter use GB or GiB?
It follows the common operating-system convention of treating GB as 1,024 MB. Strict IEC terminology would call that binary quantity a GiB.
Related tools
Disclaimer
CalcPilot's conversions are mathematically precise estimates for everyday and planning use. Always verify critical measurements with an official source before relying on them. Review our calculation methodology and full disclaimer.