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1 TB = 1,000 GB
Open in Data Size ConverterFormula
GB = TB × 1000
How to convert
To convert terabytes to gigabytes, multiply the value by 1,000. For example, 2 TB = 2,000 GB.
Conversion table
| TB | GB |
|---|---|
| 0.5 TB | 500 GB |
| 1 TB | 1,000 GB |
| 2 TB | 2,000 GB |
| 4 TB | 4,000 GB |
| 5 TB | 5,000 GB |
| 8 TB | 8,000 GB |
| 10 TB | 10,000 GB |
| 12 TB | 12,000 GB |
| 16 TB | 16,000 GB |
| 20 TB | 20,000 GB |
About these units
Storage sizes come in two systems. Decimal (SI) units step by 1,000: 1 KB = 1,000 bytes, 1 MB = 1,000 KB and 1 GB = 1,000 MB. Binary (IEC) units step by 1,024: 1 KiB = 1,024 bytes and 1 MiB = 1,024 KiB. Drive makers and most specifications use decimal units, while Windows and many programs count in binary but label the result KB, MB or GB, which is why a 1 TB drive shows up as about 931 GB. One byte is 8 bits.
FAQ
› How do I convert TB to GB?
1 TB = 1,000 GB. To convert, multiply the value by 1,000: 2 TB = 2,000 GB.
› What is 1 GB in TB?
1 GB = 0.001 TB. The reverse formula is TB = GB ÷ 1000.
› Is 1 MB 1,000 KB or 1,024 KB?
In SI units 1 MB is 1,000 KB. The 1,024-based unit has its own name, the mebibyte (MiB). Some software still writes MB for 1,024 KB, so check which convention a number uses.
› Why does a new drive show less space than advertised?
The box uses decimal gigabytes (10⁹ bytes) while the operating system reports binary gibibytes (2³⁰ bytes) labeled GB. A 500 GB drive is about 465.66 GiB; no space is missing.