Direct answer
How Many GB in a TB? 1 TB = 1024 GB
On Koverts’ data converter, 1 terabyte equals 1024 gigabytes. Storage answer with SI 1000 GB drive-label caveat.
Question
How many gigabytes are in a terabyte?
On Koverts’ converter, 1 terabyte (TB) equals 1024 gigabytes (GB). Drive boxes often mean 1000 GB (SI).
1 TB (Koverts)
1024 GB
1 TB (SI)
1000 GB
Approx. OS view of 1 TB SI
~931 GiB
Explanation
Binary conversion: 1 TB = 1024 GB = 1,099,511,627,776 bytes.
Drive marketing usually uses SI: 1 TB = 1000 GB = 1,000,000,000,000 bytes.
That is why a “1 TB” disk can appear as roughly 931 GB in some OS views.
Important caveat
Always check whether capacity claims use decimal TB or binary TiB before comparing free space.