TB to GB
One TB equals 1000 GB. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| TB | GB |
|---|---|
| 1 TB | 1000 GB |
| 2 TB | 2000 GB |
| 3 TB | 3000 GB |
| 5 TB | 5000 GB |
| 10 TB | 10000 GB |
| 15 TB | 15000 GB |
| 20 TB | 20000 GB |
| 25 TB | 25000 GB |
| 50 TB | 50000 GB |
| 100 TB | 100000 GB |
| 500 TB | 500000 GB |
| 1000 TB | 1000000 GB |
How to use
- Enter the number of TB in the field.
- The result in GB updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: GB = TB × 1000. Going back the other way, one GB is 0.001 TB.
Decimal and binary units are not the same
Storage is sold in decimal units — a kilobyte is 1000 bytes — while operating systems often count in binary, where a kibibyte is 1024. That is the whole reason a “500 GB” drive shows up as roughly 465 GiB in the system.
GB = TB × 1000
Frequently asked questions
How many GB are in one TB?
One TB is 1000 GB.
How do I convert TB to GB?
Multiply by the factor: GB = TB × 1000.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert GB back to TB?
One GB is 0.001 TB — or open the reverse page linked below.