Data Storage Converter

Convert bits, bytes, KB, MB, GB, TB, KiB, MiB, GiB and TiB without mixing decimal and binary units. See why a 500 GB drive shows about 465.66 GiB. Free.

Everything runs in your browser. Nothing you enter is uploaded or saved.

Your result

How to use Data Storage Converter

  1. Enter the amount you want to convert in the Value field, using a plain number such as 500 or 1.5.
  2. Choose the unit you are starting from in the From unit list, for example GB (1000³ bytes).
  3. Choose the unit you need in the To unit list, for example GiB (1024³ bytes).
  4. Press Calculate to work out the converted value.
  5. Read the result, which ends with the target unit name, then use Copy result to paste it elsewhere or Reset to start a new conversion.

Supported formats and limitations

Input
Numbers typed into the form (plain digits, no currency symbols or thousands separators)
Output
Result on screen, with one-click copy
Works on
Any modern browser on Windows, macOS, Linux, Android and iOS. JavaScript must be enabled.

Important limitations

Results use standard formulas and floating-point arithmetic, shown to a sensible number of decimals. They are estimates for planning and do not replace professional financial, tax, medical or legal advice. Banks and institutions may round differently.

Privacy and file processing

Everything runs in your browser. Nothing you enter is uploaded, stored or logged by this website.

About Data Storage Converter

Storage numbers rarely match from one place to another. A drive sold as 500 GB shows less space on your computer, and a download tool may count in MiB while your hosting plan quotes MB. This converter puts the two systems side by side so you can move between bits, bytes, decimal units (KB, MB, GB, TB) and binary units (KiB, MiB, GiB, TiB) without guessing which one is meant.

Type a value, pick the unit you have and the unit you want, and press Calculate. Decimal units use powers of 1000 and binary units use powers of 1024, exactly as their labels say, so 1 MB is 1,000,000 bytes and 1 MiB is 1,048,576 bytes. The answer appears with the target unit name, can be copied with one click, and is calculated entirely in your browser.

Features

  • Converts between ten units: bits, bytes, KB, MB, GB, TB, KiB, MiB, GiB and TiB.
  • Keeps decimal (1000-based) and binary (1024-based) units clearly separate, with the byte size shown in every unit label.
  • Accepts whole numbers, decimals and scientific notation such as 1e6.
  • Rounds results to up to 4 decimals with digit grouping and adds the unit name.
  • Shows a plain-language message when the value is negative, empty or not a plain number.

Why use it

  • Explains the gap between advertised drive capacity and what your operating system reports.
  • Helps you size uploads, backups and hosting plans when different tools use different units.
  • Avoids the common mistake of treating megabits and megabytes, or MB and MiB, as the same thing.
  • Works offline once the page has loaded, with no account or sign-up.

Formula used

Converted value = input × source base-unit factor / destination base-unit factor.

Examples

Megabyte to bytes

Input: Value: 1, From unit: MB (1000² bytes), To unit: Bytes

Result: 10,00,000 Bytes

One decimal megabyte is exactly ten lakh (one million) bytes.

Advertised drive size in GiB

Input: Value: 500, From unit: GB (1000³ bytes), To unit: GiB (1024³ bytes)

Result: 465.6613 GiB

This is the figure many computers show for a 500 GB drive.

Terabyte to tebibyte

Input: Value: 1, From unit: TB (1000⁴ bytes), To unit: TiB (1024⁴ bytes)

Result: 0.9095 TiB

A 1 TB drive holds a little over nine tenths of a tebibyte.

Data Storage Converter: frequently asked questions

What is the difference between MB and MiB?

MB (megabyte) is a decimal unit equal to 1,000,000 bytes. MiB (mebibyte) is a binary unit equal to 1,048,576 bytes, which is 1024 × 1024. The binary unit is about 4.9 percent larger. Drive makers usually advertise in decimal units, while many operating systems and developer tools report binary sizes, which is why the same file or disk can show two different numbers.

Why does my 500 GB hard drive show only about 465 GB?

The drive really holds 500 billion bytes, but your computer is likely dividing by 1024³ instead of 1000³ and labelling the answer GB. Converting 500 GB to GiB in this tool gives 465.6613 GiB, which matches what you see. No space is missing; the number is simply expressed in a larger binary unit, before any formatting or system files are counted.

How many bits are in a byte?

There are eight bits in one byte. Converting 8 bits to bytes gives 1 byte, and converting 100 MB to bits returns 80,00,00,000 Bits (800 million, shown with Indian digit grouping). Internet speeds are usually quoted in bits per second, while file sizes are quoted in bytes, so divide a connection speed in megabits by eight to estimate megabytes transferred each second.

Does the converter support terabytes or TiB?

Yes. TB (1000⁴ bytes) and TiB (1024⁴ bytes) are both in the unit lists. 1 TB converts to 0.9095 TiB, which is why a 1 TB drive shows roughly 931 GB on many computers, and 2 TB converts to 1,862.6451 GiB. The value field accepts numbers up to about nine quadrillion, so very large byte counts can also be entered directly as bytes.

Can I enter negative numbers or numbers with commas?

No. Storage amounts cannot be negative, so a value below zero shows the message 'Value must be at least 0.' Thousands separators are also rejected with a request for a plain number, so type 1000 rather than 1,000. Decimals such as 1.5 and scientific notation such as 2e9 are accepted. The result is shown followed by the unit you picked in the To unit list.

Is my data sent anywhere?

No. The conversion is a simple multiplication and division performed by a script in your browser. Nothing is sent to a server for processing, no account is needed, and the page keeps working if your connection drops after it loads. The surrounding website may still load its own analytics or advertising scripts.

Results are estimates for general information, not financial, medical, legal, tax or property advice. Confirm important figures with the relevant institution or a qualified professional.