If you’ve ever bought a “1TB” drive and watched Windows report it as roughly 931GB, you haven’t lost storage — you’ve run into two different, equally valid definitions of “GB” wearing the same label. Our new Data Storage Converter keeps both definitions clearly separate instead of quietly picking one.
- Two prefix families, explicitly labeled — decimal/SI (KB, MB, GB, TB — powers of 1000, what manufacturers print on the box) and binary/IEC (KiB, MiB, GiB, TiB — powers of 1024, what your OS is usually actually computing) never share an ambiguous “GB” label here.
- Bits included — because network speeds are quoted in bits per second while storage is measured in bytes, so a “100 Mbps” connection is really 12.5 MB/s, not 100 MB/s.
- Type in either direction — edit the “Amount” field or the “Result” field directly; the other side updates live.
- Swap in one click, and a grouped reference table shows every unit — base, decimal, and binary — at once.
The number behind the famous mismatch: 1 TB (decimal, the manufacturer’s honest definition) is exactly 10¹² = 1,000,000,000,000 bytes. Divide that by 2³⁰ (1,073,741,824) to get GiB — the binary unit Windows is actually computing — and you land at approximately 931.32 GiB. Nothing is missing from the drive; it’s the same bytes read with two different rulers.