GB to TB Converter
Convert gigabyte to terabyte instantly. 1 GB = 0.001 TB, worked steps and a full reference table.
How to use it
- Type the value in gigabyte — the result updates as you type.
- Use Swap to flip the direction, or change either dropdown to convert between any two units.
- Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.
Examples
| 1 GB | 0.001 TB |
| 5 GB | 0.005 TB |
| 10 GB | 0.01 TB |
| 100 GB | 0.1 TB |
One gigabyte equals 0.001 terabytes (TB). To convert gigabytes to terabytes, multiply by 0.001; to go back the other way, multiply by 1000 instead.
The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.
What gigabytes and terabytes actually measure
Gigabyte (GB) — A gigabyte is a billion bytes. Storage, downloads and phone plans.
Terabyte (TB) — A terabyte is a trillion bytes. Hard drives, backups and video archives.
GB to TB conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| GB | TB |
|---|---|
| 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 |
How to convert gigabytes to terabytes by hand
Multiply the number of gigabytes by 0.001.
For example, 25 GB × 0.001 = 0.025 TB.
Going the other way, divide by 0.001 — or multiply by 1000, which is the same thing and easier to do in your head.
Everything runs in your browser
There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.
Questions people ask
How many TB are in 1 GB?
1 GB equals exactly 0.001 TB. Multiply any value in gigabyte by 0.001 to get terabyte.
Is anything uploaded to a server?
No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.
Last updated 18 August 2026