Convert gigabytes to terabytes
Enter a value in gigabytes (GB) to get terabytes (TB). One gigabyte is 0.001 terabytes; one terabyte is 1,000 gigabytes.
How to use the Gigabyte to terabyte
- Type the number of gigabytes.
- Click Convert.
- Read the result in terabytes, plus the same value in every other digital storage unit.
GB to TB formula
terabytes = gigabytes × 0.001. To go the other way, gigabytes = terabytes × 1,000 (see terabytes to gigabytes).
Worked example
12 GB × 0.001 = 0.012 TB.
Gigabytes to terabytes conversion table
| Gigabytes | Terabytes |
|---|---|
| 0.1 GB | 0.0001 TB |
| 0.5 GB | 0.0005 TB |
| 1 GB | 0.001 TB |
| 2 GB | 0.002 TB |
| 3 GB | 0.003 TB |
| 5 GB | 0.005 TB |
| 10 GB | 0.01 TB |
| 20 GB | 0.02 TB |
| 25 GB | 0.025 TB |
| 50 GB | 0.05 TB |
| 100 GB | 0.1 TB |
| 250 GB | 0.25 TB |
| 500 GB | 0.5 TB |
| 1,000 GB | 1 TB |
About the gigabyte
1,000 MB. Phone storage and mobile data plans.
About the terabyte
1,000 GB. Hard drives and cloud storage.
Related conversions
terabytes to gigabytes · gigabytes to megabytes · gigabytes to gibibytes · any unit.
Frequently asked questions
How many terabytes in a gigabyte?
0.001 terabytes.
How many gigabytes in a terabyte?
1,000 gigabytes.
Is the factor exact?
The factor 0.001 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.