Data Storage Converter

Convert data sizes in both decimal (KB, MB, GB) and binary (KiB, MiB, GiB) units, plus bits for network speeds.

FreeNo sign-upRuns in your browserMobile-friendly

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What does the Data Storage Converter do?

Storage makers, mobile networks and most phones use decimal units (1 GB = 1,000,000,000 bytes). Windows uses binary calculation (1 GiB = 1,073,741,824 bytes) but labels it “GB”. That is why a “1 TB” drive appears as about 931 GB on a Windows PC — no space is missing.

The converter shows both systems side by side, plus megabits and gigabits used for internet speeds.

How to use the Data Storage Converter

  1. Enter a value.
  2. Choose the units.
  3. Compare decimal and binary values in the table.

Examples

New drive

1 TB = 1,000,000,000,000 bytes = 931.32 GiB (what Windows shows).

Internet

100 Mbit = 12.5 MB.

Common use cases

  • Understanding storage capacity
  • Estimating file transfers
  • Cloud and hosting plans
  • Network and bandwidth calculations

Features and benefits

  • Private by design — your data is processed on your device and never uploaded.
  • Free with no account, no watermark and no usage limits.
  • Works on phones, tablets and desktops in any modern browser.

Limitations to know

  • Some older documentation uses KB to mean 1,024 bytes; check the context.

Frequently asked questions

Why does my 1 TB drive show 931 GB?

Windows divides by 1,024 three times but still uses the label “GB”.

What is the difference between Mb and MB?

Mb (megabit) is one-eighth of an MB (megabyte).

Which units does macOS use?

Modern macOS uses decimal units, so a 1 TB drive shows as 1 TB.

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