Last updated: March 2, 2026

How to Convert Between Data Size Units

Formula

Data size conversion uses powers of 1024 (binary) in computing. This converter handles bytes through petabytes using the binary (IEC) standard.

In the binary system: 1 KB = 1,024 bytes, 1 MB = 1,048,576 bytes, 1 GB = 1,073,741,824 bytes. Storage manufacturers often use decimal (powers of 1000) which is why drives appear smaller than advertised.

Common use cases:

  • Understanding hard drive and SSD capacities
  • Calculating file storage requirements
  • Network data transfer size planning

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