There are two common ways to define how many megabytes (MB) are in one gigabyte (GB), depending on the measurement system used:
- Decimal (base-10) system: 1 GB = 1000 MB. This system is often used by storage device manufacturers and in general marketing
- Binary (base-2) system: 1 GB = 1024 MB. This system is used by most operating systems and computers for memory and file size calculations
In summary:
Measurement System| 1 GB in MB
---|---
Decimal (base-10)| 1000 MB
Binary (base-2)| 1024 MB
Both are correct depending on context, but the binary system is more common in computing, while the decimal system is common in storage device labeling