Data Storage Converter

Bytes, KB, MB, GB, TB — decimal or binary (KiB/MiB/GiB). Convert digital storage units: bytes, KB, MB, GB, TB and binary KiB, MiB, GiB units. Explains why a "500 GB" drive shows less. Free data size converter.

This tool runs 100% in your browser. Your input is never sent to any server — you can even go offline after the page loads.

About the Data Storage Converter

Why does a 500 GB hard drive show as 465 GB in your OS? Because disk makers count decimal (1 GB = 10⁹ bytes) while operating systems count binary (1 GiB = 2³⁰ bytes). This converter handles both systems side by side: kB/MB/GB/TB/PB in decimal, and KiB/MiB/GiB/TiB in binary, with bits included for network speeds. The clearest way to settle every "missing gigabytes" argument.

How to use the Data Storage Converter

  1. Enter the amount and choose its unit.
  2. Pick decimal (SI) or binary (IEC) interpretation.
  3. Read the full conversion table.
  4. Compare the two systems to see the difference.

Key features

Why is 1 KiB 1024 bytes and not 1000?
Computers address memory in powers of two, so binary units were defined on 1024. The IEC created KiB/MiB/GiB names to end confusion with kB/MB/GB.
How many MB is 1 GB?
Exactly 1000 MB in decimal (SI) usage; 1024 MiB if the value is actually a gibibyte. Context decides which applies.

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