Convert terabytes to gigabytes for large storage capacity.
Convert terabytes to gigabytes using the binary standard conversion factor of 1 TB = 1024 GB.
Convert terabytes to gigabytes for large storage capacity.
Convert terabytes to gigabytes using the binary standard conversion factor of 1 TB = 1024 GB.
Binary conversion used for computing. Note that manufacturers often use decimal (1 TB = 1000 GB) for marketing purposes.
Common mistake: Expecting a 1 TB drive to show 1000 GB in Windows. Operating systems use binary (1024), so a 1 TB drive shows ~931 GB. Also, confusing TiB (tebibyte) with TB (terabyte).
| Item | TB | GB |
|---|---|---|
| SSD laptop | 0.5 | 512 |
| External HDD | 2 | 2048 |
| Desktop HDD | 4 | 4096 |
| NAS drive | 8 | 8192 |
| Cloud storage | 10 | 10240 |
1 TB equals 1024 GB (binary) or 1000 GB (decimal).
1 petabyte equals 1024 terabytes.
In computing, the binary standard defines 1 TB as exactly 1024 GB (2^40 bytes).
Manufacturers use decimal (1 TB = 1000 GB), while OS uses binary (1 TB = 1024 GB). A "2 TB" drive shows ~1863 GB in Windows.
TB is decimal (10^12 bytes), TiB is binary (2^40 bytes = 1024^4 bytes).
4 TB equals exactly 4096 GB (binary).
Last Updated: 2026 · Reviewed by the UnitFig editorial team