Convert terabytes to gibibytes

One terabyte is 931.322575 gibibytes. To convert any amount, multiply by 931.322575. Going the other way, one gibibyte is 0.00107374182 terabytes.

Multiply the terabyte figure by 931.322575. So GiB = TB × 931.322575. For a quick mental estimate, multiplying by about 931 gets you within a percent or so, which is close enough for most everyday purposes.

One terabyte is a large photo and video library. A terabyte is a trillion bytes. Consumer drives are sold in decimal terabytes, which is why a '2 TB' drive shows as roughly 1.82 TiB once formatted.

One gibibyte is what your OS calls a 'GB' of memory. A gibibyte is exactly 1,024³ bytes, about 7.4% more than a gigabyte. RAM is always sold in binary units even when storage is not.

Because two different definitions are in play. Storage manufacturers use decimal units — 1 TB means exactly one trillion bytes. Windows and many other systems display binary units but label them with decimal names, so they show that same drive as 931 "GB" when they mean 931 gibibytes. Nothing is missing and nothing is faulty; the drive holds exactly what it says, measured differently. The IEC standardised kibi, mebi and gibi in 1998 specifically to end this, but adoption has been patchy.

Yes — both decimal and binary prefixes are exactly defined powers, so every figure here is exact rather than approximate. The results are shown to seven significant figures; the underlying arithmetic uses full double precision.