Data Storage Converter – Bytes, KB, MB, GB & TB

Convert between bits, bytes, kilobytes, megabytes, gigabytes and more.

Data Storage Converter What is this? ↓
About the Data Storage Converter

What is the Data Storage Converter?

A data storage converter translates digital capacity between bits, bytes and decimal and binary multiples.

Why use this calculator?

Storage makers use decimal units (1 GB = 1,000 MB) while operating systems often use binary units (1 GiB = 1,024 MiB), which is why reported sizes differ.

How to use it

  1. Enter the data size.
  2. Choose the source and target units.
  3. Read the converted size.

Formula

1 byte = 8 bits; decimal kilobyte = 1,000 bytes; binary kibibyte = 1,024 bytes.
Use the "i" units (KiB, MiB, GiB) for binary multiples and plain KB, MB, GB for decimal ones.
Frequently Asked Questions
Why does my 1 TB drive show less than 1 TB?
Drive makers use decimal terabytes (1,000 GB) while systems often report binary tebibytes (1,024 GiB), so the same capacity shows a smaller number.
How many bits are in a byte?
There are 8 bits in one byte.
How precise are the conversions?
Conversions use standard, internationally defined factors and are rounded for display. They are accurate to the number of digits shown.
Can I convert back and forth without losing accuracy?
Yes. Enter the original value to get an exact inverse conversion; avoid chaining rounded results if you need maximum precision.
Which measurement system is used?
Both metric (SI) and US customary / imperial units are supported and clearly labelled.
Is this calculator free to use?
Yes. Every calculator on this site is completely free, with no hidden fees, no subscriptions and no limits on how many times you can use it.
How accurate are the results?
We use standard, widely accepted formulas and calculate in your browser using double-precision arithmetic. Results are rounded for readability, so treat them as reliable estimates rather than a guarantee. Real-world factors can vary the true figure.
Can I add this calculator to my own website?
Yes. Open this calculator page and use the "Add to your website" box in the sidebar to copy a ready-made iframe snippet, then paste it into any HTML page.
Does it work on a phone or tablet?
Yes. The layout is fully responsive, so it works on desktops, laptops, tablets and mobile phones, and every input adapts to touch screens.
Is the information I type kept private?
Yes. All calculations run locally in your browser. Nothing you enter is uploaded, stored or shared with anyone.

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