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Convert gigabytes to terabytes
Instant, accurate GB → TB conversion with a live converter, table and formula.
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1 gigabyte = 0.001 terabytes
1 terabyte = 1000 gigabytes
gigabytes to terabytes table
| gigabytes (GB) | terabytes (TB) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Formula
terabytes = gigabytes × 0.001.
Example
10 gigabytes = 0.01 terabytes.
What is a gigabyte?
A gigabyte (GB) is 1,000 megabytes — a few hours of video.
What is a terabyte?
A terabyte (TB) is 1,000 gigabytes — a typical hard-drive size.
Real-world reference points
A photo is a few MB; an MP3 song ~4 MB; an HD movie ~4 GB; a modern phone stores 128+ GB.
| Reference | gigabytes | terabytes |
|---|---|---|
| E-mail (text only) | 0.00002 GB | 0 TB |
| Smartphone photo | 0.003 GB | 0.000003 TB |
| MP3 song | 0.004 GB | 0.000004 TB |
| DVD capacity | 4.7 GB | 0.0047 TB |
| HD movie stream | 4 GB | 0.004 TB |
Mistakes to avoid with data conversions
- Megabits vs megabytes: your '100 Mbps' connection downloads at ~12.5 MB/s — ISPs quote bits, files are bytes.
- Decimal vs binary units: drives are sold in decimal GB (10⁹), so a '1 TB' drive shows ~931 'GB' (GiB) in Windows.
- Assuming video size scales with length only — resolution and bitrate matter more than minutes.
Frequently asked questions
How many terabytes in a gigabytes?+
1 gigabyte = 0.001 terabytes.
How do I convert gigabytes to terabytes?+
Enter the value in the gigabytes box above and the terabytes value appears instantly. You can also type in the terabytes box to convert the other way.
Is this GB to TB converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.