How to convert gigabytes to terabytes
One gigabyte equals 0.001 terabytes. To convert, multiply the number of gigabytes by 0.001 (or divide by 1,000):
Mental-math shortcut: Divide gigabytes by 1,000: 500 GB = 0.5 TB.
Example
Convert 500 gigabytes to terabytes: 500 GB × 0.001 = 0.5 TB.
Gigabytes to Terabytes conversion chart
| Gigabytes (GB) | Terabytes (TB) |
|---|---|
| 100 | 0.1 |
| 128 | 0.128 |
| 250 | 0.25 |
| 256 | 0.256 |
| 500 | 0.5 |
| 512 | 0.512 |
| 750 | 0.75 |
| 1,000 | 1 |
| 1,024 | 1.024 |
| 2,000 | 2 |
| 4,000 | 4 |
| 5,000 | 5 |
| 8,000 | 8 |
| 10,000 | 10 |
What is a gigabyte?
A gigabyte (GB) is 1,000 megabytes, or one billion bytes, in the decimal system that phone makers, drive makers and mobile carriers use. Windows counts a "gigabyte" as 1,024³ bytes (a gibibyte, GiB), which is why a 256 GB drive shows up as about 238 GB.
What is a terabyte?
A terabyte (TB) is 1,000 gigabytes, or one trillion bytes. Hard drives, SSDs and cloud storage plans are sold in terabytes. Because Windows uses binary units, a 1 TB drive appears as about 931 GB (more precisely, 931 GiB) on a PC.
Converting the other way? Use the Terabytes to Gigabytes converter.
Frequently asked questions
How many terabytes is one gigabyte?
One gigabyte is 0.001 terabytes.
How do I convert gigabytes to terabytes?
Multiply the value in gigabytes by 0.001. For example, 500 GB × 0.001 = 0.5 TB.
What is 1,000 GB in terabytes?
1,000 GB is 1 terabytes.
How do I convert terabytes to gigabytes?
Multiply terabytes by 1,000 (or divide by 0.001). You can also use our Terabytes to Gigabytes converter.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
Last updated: