Terabytes to gigabytes
Multiply terabytes by 1,000 to get gigabytes.
8 TB = 8,000 GB
How to convert terabytes to gigabytes
The gigabyte is one billion bytes (10⁹ B) in the decimal convention. The terabyte is one trillion bytes (10¹² B) in the decimal convention.
Worked example — 8 TB: 8 × 1,000 = 8,000 GB.
Terabytes to gigabytes table
| Terabytes | Gigabytes |
|---|---|
| 0.5 TB | 500 GB |
| 1 TB | 1,000 GB |
| 2 TB | 2,000 GB |
| 4 TB | 4,000 GB |
| 8 TB | 8,000 GB |
| 10 TB | 10,000 GB |
| 16 TB | 16,000 GB |
| 20 TB | 20,000 GB |
| 100 TB | 100,000 GB |
Reverse and related
About terabytes and gigabytes
Terabyte (TB)
1 TB = 1,000 GBDefinition. One trillion bytes (10¹² B) in the decimal convention
History and origin
The terabyte, a trillion bytes, became an everyday size as hard drives grew through the 2000s. As with smaller units, the decimal value differs from the binary tebibyte.
Current use
Terabytes measure hard drives, large media libraries and backups.
Source: IEC 80000-13 (quantities and units — information science); NIST on binary prefixes
Gigabyte (GB)
1 GB = 0.001 TBDefinition. One billion bytes (10⁹ B) in the decimal convention
History and origin
The gigabyte uses the metric giga prefix for a billion bytes. Drive makers label capacity in decimal gigabytes, while operating systems often report the binary gibibyte, which is why sizes seem to disagree.
Current use
Gigabytes measure phone storage, memory and mobile data plans.
Source: IEC 80000-13 (quantities and units — information science); NIST on binary prefixes
Where people use this
Terabytes: hard drives, backups. Gigabytes: phone storage, mobile data plans. 1 TB is 1000 GB.
Every value is carried to full double precision; the display is rounded.
Both units are defined in IEC 80000-13 (quantities and units — information science); NIST on binary prefixes.
Questions people ask
How many GB is 1 TB?
One terabyte is 1000 gigabytes (decimal); a 1 TB drive shows about 931 GiB in the OS.
How many GB is 2 TB?
2 TB is 2000 GB.
How many GB is 4 TB?
4 TB is 4000 GB.