How to convert terabytes to gigabytes
To convert terabytes to gigabytes, multiply by 1,000. 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.
Terabyte to Gigabyte conversion table
| Terabyte (TB) | Gigabyte (GB) |
|---|---|
| 0.1 TB | 100 GB |
| 0.5 TB | 500 GB |
| 1 TB | 1,000 GB |
| 2 TB | 2,000 GB |
| 3 TB | 3,000 GB |
| 4 TB | 4,000 GB |
| 5 TB | 5,000 GB |
| 10 TB | 10,000 GB |
| 20 TB | 20,000 GB |
| 25 TB | 25,000 GB |
| 50 TB | 50,000 GB |
| 100 TB | 100,000 GB |
| 500 TB | 500,000 GB |
| 1,000 TB | 1,000,000 GB |
About the units
Terabyte (TB)
A terabyte is 1,000 gigabytes, the typical size of modern hard drives and SSDs.
Gigabyte (GB)
A gigabyte is 1,000,000,000 bytes and the common unit for phone storage and data plans.
How to use this converter
- Type the number of terabytes (TB) in the input box.
- The result in gigabytes appears instantly — no button needed.
- See the same value in every other data storage unit just below.
- Use “Swap units” to convert gigabytes back to terabytes.
When you’ll use the terabyte to gigabyte conversion
Converting terabytes to gigabytes comes up more often than you might expect — for example when checking whether a file fits an upload limit, estimating download times, or comparing phone or cloud storage plans. 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 TB = 1,000 GB.
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 gigabytes are in one terabyte?
One terabyte equals 1,000 gigabytes. 1,000 is the exact factor used by this converter.
How do I convert terabytes to gigabytes?
Multiply the value in terabytes by 1,000. To go the other way, multiply gigabytes by 0.001.
What is 10 TB in GB?
10 TB = 10,000 GB. Also, 5 TB = 5,000 GB and 100 TB = 100,000 GB.
What is the difference between a terabyte and a gigabyte?
A terabyte is 1,000 gigabytes, the typical size of modern hard drives and SSDs. A gigabyte is 1,000,000,000 bytes and the common unit for phone storage and data plans.
Is this tool free and private?
Yes — the Terabyte to Gigabyte 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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