Convert GB to TB instantly — formula, worked examples and a conversion table of common values.
Convert gigabytes (GB) to terabytes (TB). Enter a value on either side and the other updates instantly — nothing is sent to a server.
One gigabyte equals 0.001 TB. The table below lists the values people look up most often, and each one links to a page with the worked calculation.
TB = GB ÷ 1,000| Gigabyte (1000³ B) (GB) | Terabyte (1000⁴ B) (TB) |
|---|---|
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
1 gigabyte = 0.001 TB.
256 GB = 0.256 TB.
512 GB = 0.512 TB.
Use the formula TB = GB ÷ 1,000. Or type any value into the converter above — it works in both directions.