How to convert gigabytes to terabytes
To convert gigabytes to terabytes, multiply by 0.001. Data size conversions matter for file uploads, cloud storage plans, hard drives and internet usage. Decimal (SI) prefixes are used: 1 KB = 1,000 bytes.
Gigabyte to Terabyte conversion table
| Gigabyte (GB) | Terabyte (TB) |
|---|---|
| 0.1 GB | 0.0001 TB |
| 0.5 GB | 0.0005 TB |
| 1 GB | 0.001 TB |
| 2 GB | 0.002 TB |
| 3 GB | 0.003 TB |
| 4 GB | 0.004 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 |
About the units
Gigabyte (GB)
A gigabyte is 1,000,000,000 bytes and the common unit for phone storage and data plans.
Terabyte (TB)
A terabyte is 1,000 gigabytes, the typical size of modern hard drives and SSDs.
How to use this converter
- Type the number of gigabytes (GB) in the input box.
- The result in terabytes appears instantly — no button needed.
- See the same value in every other data storage unit just below.
- Use “Swap units” to convert terabytes back to gigabytes.
When you’ll use the gigabyte to terabyte conversion
Converting gigabytes to terabytes comes up more often than you might expect — for example when estimating download times, reading hard drive and SSD specs, or checking whether a file fits an upload limit. Type your number once and you get the exact answer plus every related unit, so you don’t need to convert twice.
💡 The factor is exact and easy to remember: 1 GB = 0.001 TB.
Watch out for these mix-ups
- Drive makers use 1 KB = 1,000 bytes; operating systems often show KiB (1,024).
- Internet speeds are in bits per second, file sizes in bytes — a factor of 8.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many terabytes are in one gigabyte?
One gigabyte equals 0.001 terabytes. 0.001 is the exact factor used by this converter.
How do I convert gigabytes to terabytes?
Multiply the value in gigabytes by 0.001. To go the other way, multiply terabytes by 1,000.
What is 10 GB in TB?
10 GB = 0.01 TB. Also, 5 GB = 0.005 TB and 100 GB = 0.1 TB.
What is the difference between a gigabyte and a terabyte?
A gigabyte is 1,000,000,000 bytes and the common unit for phone storage and data plans. A terabyte is 1,000 gigabytes, the typical size of modern hard drives and SSDs.
Is this tool free and private?
Yes — the Gigabyte to Terabyte is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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