TB to GB Converter
Convert terabyte to gigabyte instantly. 1 TB = 1000 GB, worked steps and a full reference table.
How to use it
- Type the value in terabyte — 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 TB | 1000 GB |
| 5 TB | 5000 GB |
| 10 TB | 10000 GB |
| 100 TB | 100000 GB |
One terabyte equals 1000 gigabytes (GB). To convert terabytes to gigabytes, multiply by 1000; to go back the other way, multiply by 0.001 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 terabytes and gigabytes actually measure
Terabyte (TB) — A terabyte is a trillion bytes. Hard drives, backups and video archives.
Gigabyte (GB) — A gigabyte is a billion bytes. Storage, downloads and phone plans.
TB to GB conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| TB | GB |
|---|---|
| 1 TB | 1000 GB |
| 2 TB | 2000 GB |
| 5 TB | 5000 GB |
| 10 TB | 10000 GB |
| 25 TB | 25000 GB |
| 50 TB | 50000 GB |
| 100 TB | 100000 GB |
How to convert terabytes to gigabytes by hand
Multiply the number of terabytes by 1000.
For example, 25 TB × 1000 = 25000 GB.
Going the other way, divide by 1000 — or multiply by 0.001, 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 GB are in 1 TB?
1 TB equals exactly 1000 GB. Multiply any value in terabyte by 1000 to get gigabyte.
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