Convert gigabytes to terabytes
Enter a value in gigabytes to convert it to terabytes.
gigabytes to terabytes reference
| gigabytes | terabytes |
|---|---|
| 1 GB | 0.001 TB |
| 2 GB | 0.002 TB |
| 5 GB | 0.005 TB |
| 10 GB | 0.01 TB |
| 25 GB | 0.025 TB |
| 50 GB | 0.05 TB |
| 100 GB | 0.1 TB |
The conversion factor
One gigabyte is 0.001 terabytes. So to convert, multiply your figure in gigabytes by 0.001. To go the other way, multiply terabytes by 1000, or use the terabytes to gigabytes converter.
Doing it in your head
For a quick estimate, round the factor: roughly "divide by 1000". Use the exact converter above when the number matters.
Where this conversion comes up
Storage and download sizes, data caps, and the decimal-vs-binary gap that makes a “1 TB” drive show as about 931 GiB.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many terabytes are in a gigabyte?
1 gigabyte = 0.001 terabytes.
What is the formula to convert gigabytes to terabytes?
Multiply the number of gigabytes by 0.001. To go back the other way, multiply terabytes by 1000.
What is 10 gigabytes in terabytes?
10 gigabytes = 0.01 terabytes. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.