What does this tool do?
Storage is advertised in decimal units, while operating systems often report binary units. This converter shows both so the gap between a 1 TB drive and its reported 931 GiB is easy to see.
The Formula
Decimal: 1 TB = 1,000 GB; binary: 1 TiB = 1,024 GiB = 1,099,511,627,776 bytesFrequently Asked Questions
Why does a 1 TB drive show 931 GB?
The drive holds 1,000,000,000,000 bytes. Reported in binary units that is 931.32 GiB, so the operating system shows a smaller number for the same capacity.
Which standard should I use?
Use decimal units for marketing, storage purchases and data plans. Use binary units when comparing with an operating system's file sizes or memory figures.