Gigabytes to Terabytes
Convert gigabytes to terabytes instantly. 1 GB = 0.001 TB. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert gigabytes to terabytes
To convert gigabytes to terabytes, divide by 1,000 (multiply by 0.001). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
TB = GB × 0.001
Gigabytes to Terabytes conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Gigabytes | Terabytes |
|---|---|
| 1 GB | 0.001 TB |
| 2 GB | 0.002 TB |
| 3 GB | 0.003 TB |
| 5 GB | 0.005 TB |
| 10 GB | 0.01 TB |
| 20 GB | 0.02 TB |
| 25 GB | 0.025 TB |
| 50 GB | 0.05 TB |
| 100 GB | 0.1 TB |
| 500 GB | 0.5 TB |
| 1,000 GB | 1 TB |
What is a gigabyte?
A billion bytes. Drive capacity is sold in these.
What is a terabyte?
A trillion bytes.
The formula
TB = GB × 0.001
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Gigabytes to Terabytes
- Type the number of gigabytes you want to convert.
- Read the result in terabytes straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked terabytes to gigabytes page.
Gigabytes to Terabytes — frequently asked questions
How many terabytes are in a gigabyte?
One gigabyte equals 0.001 TB. TB = GB × 0.001
What is the formula to convert gigabytes to terabytes?
The formula is TB = GB × 0.001. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert terabytes back to gigabytes?
Divide instead of multiplying: one terabyte is 1,000 GB. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this gigabytes to terabytes free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the gigabytes to terabytes.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error