Byte Size Converter
Convert bytes to KB, MB, GB, TB with binary (1024) or decimal (1000) base.
Enter a value or use Example.
A hard drive advertised as 1 terabyte and showing up as roughly 931 gigabytes in an operating system isn't a manufacturing error, it's two different definitions of the same units colliding, drive manufacturers use decimal base, where a kilobyte is exactly 1,000 bytes, while operating systems typically report binary base, where a kilobyte is 1,024 bytes, and that gap compounds noticeably by the time it reaches terabytes. This tool converts byte counts into KB, MB, GB, and TB using either the binary or decimal base explicitly, showing both results rather than picking one silently.
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Useful for understanding why a purchased drive's capacity looks smaller once it's actually plugged in, converting a file size using the same base a specific operating system reports, or double-checking which byte definition a spec sheet or a cloud storage plan is actually using.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline