💾 Data Storage Converter

What This Tool Does

This tool converts between units of digital storage — bytes, kilobytes, megabytes, gigabytes, terabytes, and more. Enter a value in any unit and it gives you the equivalents. It makes sense of file sizes, storage capacities, and data amounts, which is handy whenever you need to compare sizes, check whether something fits, or understand a figure quoted in an unfamiliar unit.

Digital storage units climb quickly and the jumps between them are large, so it is easy to lose track of how a number of megabytes relates to gigabytes, or whether a file will fit in the space available. This converter handles the arithmetic, turning storage figures into terms you can directly compare and reason about.

How Storage Units Relate

The basic unit is the byte, which holds a single character of text. From there, units climb by large steps: roughly a thousand bytes make a kilobyte, a thousand kilobytes make a megabyte, a thousand megabytes make a gigabyte, and a thousand gigabytes make a terabyte. Each step up multiplies the capacity by about a thousand, which is why a terabyte is an enormous amount compared to a megabyte — the scale grows fast.

There is a well-known subtlety worth knowing: storage is sometimes counted in powers of 1,000 and sometimes in powers of 1,024. The strict binary definitions (where a kilobyte is 1,024 bytes) reflect how computers actually group data, while the decimal definitions (1,000 bytes) are often used for marketing storage capacities. This is why a drive sold as a certain number of gigabytes can show slightly less when measured by your operating system — the two are using different definitions. The difference is small at low units but grows at larger scales, and it explains a discrepancy that confuses many people.

Quick Tips

• Each unit up — KB to MB to GB to TB — is roughly a thousand times the previous one.
• A drive's advertised size can read slightly smaller in your system due to 1,000 vs 1,024 definitions.
• Convert a file size and an available capacity to the same unit to compare them directly.
• A byte holds one character; the units climb fast, so a terabyte dwarfs a megabyte.

Frequently Asked Questions

How are storage units related?

They climb by roughly a thousand at each step: about 1,000 bytes per kilobyte, 1,000 kilobytes per megabyte, 1,000 megabytes per gigabyte, and 1,000 gigabytes per terabyte. Each step is a large jump in capacity.

Why does my drive show less space than advertised?

Because of the 1,000 versus 1,024 difference. Drives are often sold using decimal units (1,000 bytes per KB), while your system may measure in binary units (1,024), making the usable figure appear slightly smaller.

How big is a gigabyte?

A gigabyte is about a thousand megabytes, or a million kilobytes. It is enough for many photos, songs, or documents, while large videos and software are often measured in multiple gigabytes.

Is my data private?

Yes. All conversion happens in your browser, so nothing you enter is uploaded or stored. You can convert figures safely.