GB to TB Converter
1 gigabyte = 0.001 terabytes
Type a value in either box: the conversion between gigabytes (GB) and terabytes (TB) updates instantly.
Good to know
A drive sold as 1 TB holds 1,000,000,000,000 bytes. Windows shows it as about 931 GB because it counts in binary gibibytes.
How to convert gigabytes to terabytes
To convert gigabytes to terabytes, multiply the number of gigabytes by 0.001. To go the other way, multiply terabytes by 1,000.
TB = GB × 0.001
Worked examples
- 256 GB = 0.256 TB
- 500 GB = 0.5 TB
- 1,000 GB = 1 TB
- 2,000 GB = 2 TB
GB to TB conversion table
| GB (GB) | TB (TB) |
|---|---|
| 1 GB | 0.001 TB |
| 32 GB | 0.032 TB |
| 64 GB | 0.064 TB |
| 128 GB | 0.128 TB |
| 256 GB | 0.256 TB |
| 500 GB | 0.5 TB |
| 512 GB | 0.512 TB |
| 750 GB | 0.75 TB |
| 1,000 GB | 1 TB |
| 1,024 GB | 1.024 TB |
| 2,000 GB | 2 TB |
| 4,000 GB | 4 TB |
| 8,000 GB | 8 TB |
About the units
GB (GB)
A gigabyte (GB) is 1,000,000,000 bytes, or 1,000 MB, in decimal units. Windows reports binary gibibytes (GiB, 1,073,741,824 bytes) but labels them GB.
TB (TB)
A terabyte (TB) is 1,000 GB, or one trillion bytes. Hard drives and SSDs are sold in decimal terabytes.
Frequently asked questions
How do I convert gigabytes to terabytes?
TB = GB × 0.001What is 500 GB in terabytes?
How many terabytes are in a gigabyte?
How many gigabytes are in a terabyte?
Conversion factors use exact international definitions where they exist (for example 1 inch = 2.54 cm and 1 lb = 0.45359237 kg). Results are rounded for display only.