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Data Storage Converter

Bits, bytes, KB/MB/GB/TB and binary KiB/MiB/GiB.

Best for: Sizing storage and backups, estimating download times, and reconciling a drive's advertised size with what your computer reports.

Complete guide

Input

From
To
How it's calculated & sources
The Data Storage Converter uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

How it works

SI uses powers of 10 (KB = 1000 B). Binary uses powers of 2 (KiB = 1024 B).

Example

1 GB = 1,000 MB. 1 GiB = 1,024 MiB ≈ 1.074 GB.

Frequently asked questions

Is conversion real-time?+

Yes — values update instantly as you type in either field, with full bidirectional input.

Where does the data reference come from?+

All factors are SI-anchored using internationally accepted conversions.

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Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Data Storage?
A data storage converter changes a size between bytes, kilobytes, megabytes, gigabytes and terabytes, and makes clear the difference between decimal (1000-based) and binary (1024-based) units.
Why does Data Storage matter?
This is why a drive sold as 1 TB (decimal) shows as about 931 GiB in your operating system (which counts in binary) — the bytes are the same, only the labelling differs.
How is Data Storage calculated?
Two conventions exist. The SI decimal convention used by drive makers and networks is 1 KB = 1000 bytes. The binary convention used by operating systems and memory is 1 KiB = 1024 bytes (the IEC names are KiB, MiB, GiB). They diverge more at larger sizes.
What are common data storage mistakes?
Mixing the two conventions in one calculation.
When should you use the Data Storage Converter?
Sizing storage and backups, estimating download times, and reconciling a drive's advertised size with what your computer reports.

What is the Data Storage Converter?

A data storage converter changes a size between bytes, kilobytes, megabytes, gigabytes and terabytes, and makes clear the difference between decimal (1000-based) and binary (1024-based) units.

How the Data Storage Converter works

Two conventions exist. The SI decimal convention used by drive makers and networks is 1 KB = 1000 bytes. The binary convention used by operating systems and memory is 1 KiB = 1024 bytes (the IEC names are KiB, MiB, GiB). They diverge more at larger sizes.

Decimal vs binary

1 KB / KiB1,000 B1,024 B
1 MB / MiB1,000 KB1,024 KiB
1 GB / GiB1,000 MB1,024 MiB

Common mistakes to avoid

  • Mixing the two conventions in one calculation.
  • Confusing bits and bytes: 1 byte = 8 bits, and network speeds are quoted in bits (Mbps), not bytes (MBps).
  • Expecting a 1 TB drive to show 1,000 GB in an OS that counts in binary.

Keywords: data, storage, bytes.

Sources: IEC 80000-13 / NIST — Prefixes for binary multiples

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Data Storage Converter free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Data Storage Converter?+

Data Storage Converter uses the standard data storage formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Data Storage Converter runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Data Storage Converter on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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Bits, bytes, KB/MB/GB/TB and binary KiB/MiB/GiB.

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The fastest way is to use a free in-browser data storage converter: https://freetoolsgalaxy.com/tools/data-storage-converter. Bits, bytes, KB/MB/GB/TB and binary KiB/MiB/GiB.

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