Convert Terabytes to Gigabytes
One terabyte equals 1,024 gigabytes. Type any value to convert terabytes to gigabytes instantly — with a full reference table below.
Convert Terabytes to Gigabytes
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How to convert Terabytes to Gigabytes
To convert terabytes to gigabytes, multiply by 1,024. One terabyte equals 1,024 GB, and one gigabyte equals 0.000976562 TB.
- Take the value in terabytes — for example 3 TB.
- Multiply by 1,024 (the number of gigabytes in one terabyte).
- 3 × 1,024 = 3,072 GB.
Quick mental estimate: Multiply the number of terabytes by 1,024 — that is exact.
Terabytes to Gigabytes conversion table
| Terabytes | Gigabytes |
|---|---|
| 1 TB | 1,024 GB |
| 2 TB | 2,048 GB |
| 4 TB | 4,096 GB |
| 5 TB | 5,120 GB |
| 8 TB | 8,192 GB |
| 10 TB | 10,240 GB |
| 16 TB | 16,384 GB |
| 20 TB | 20,480 GB |
| 32 TB | 32,768 GB |
| 50 TB | 51,200 GB |
| 64 TB | 65,536 GB |
| 100 TB | 102,400 GB |
| 128 TB | 131,072 GB |
| 256 TB | 262,144 GB |
| 512 TB | 524,288 GB |
| 1,024 TB | 1,048,576 GB |
| Gigabytes | Terabytes |
|---|---|
| 1 GB | 0.000976562 TB |
| 2 GB | 0.00195312 TB |
| 4 GB | 0.00390625 TB |
| 5 GB | 0.00488281 TB |
| 8 GB | 0.0078125 TB |
| 10 GB | 0.00976562 TB |
| 16 GB | 0.015625 TB |
| 20 GB | 0.0195312 TB |
| 32 GB | 0.03125 TB |
| 50 GB | 0.0488281 TB |
| 64 GB | 0.0625 TB |
| 100 GB | 0.0976562 TB |
| 128 GB | 0.125 TB |
| 256 GB | 0.25 TB |
| 512 GB | 0.5 TB |
| 1,024 GB | 1 TB |
About converting Terabytes to Gigabytes
Terabytes (TB) and Gigabytes (GB) are both units of data storage. The exact factor is 1 TB = 1,024 GB, so multiply by 1,024 to go from terabytes to gigabytes (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Gigabytes to Terabytes converter, or the full unit converter for every unit at once.
Binary vs decimal: why your drive looks smaller
Windows and RAM reports count in powers of 1,024 (binary, sometimes written KiB/MiB/GiB); drive makers, macOS and mobile carriers count in powers of 1,000 (decimal). Same bytes, two answers:
| Terabytes | Gigabytes (binary · Windows) | Gigabytes (decimal · on the box) |
|---|---|---|
| 1 TB | 1,024 GB | 1,000 GB |
| 2 TB | 2,048 GB | 2,000 GB |
| 4 TB | 4,096 GB | 4,000 GB |
| 5 TB | 5,120 GB | 5,000 GB |
| 8 TB | 8,192 GB | 8,000 GB |
| 10 TB | 10,240 GB | 10,000 GB |
| 16 TB | 16,384 GB | 16,000 GB |
| 20 TB | 20,480 GB | 20,000 GB |
| 32 TB | 32,768 GB | 32,000 GB |
| 50 TB | 51,200 GB | 50,000 GB |
Example: a “1 TB” drive holds 10¹² bytes, which Windows shows as about 931 GB.
Real-world data storage in terabytes and gigabytes
| Example | Terabytes | Gigabytes |
|---|---|---|
| A CD | 0.000667572 TB | 0.683594 GB |
| A single-layer DVD (4.7 GB) | 0.00427463 TB | 4.377216 GB |
| A 50 GB dual-layer Blu-ray | 0.0454747 TB | 46.56613 GB |
“≈” marks typical values; the rest are defined or measured figures.
The units
Here, 1,024 GB = 1,099,511,627,776 bytes (TiB). Decimal terabyte = 10¹² bytes.
Used for: Hard drives and cloud storage.
Here, 1,024 MB = 1,073,741,824 bytes (GiB). Decimal gigabyte = 1,000,000,000 bytes.
Used for: Phone storage, mobile data, RAM.
This page uses binary units (1 KB = 1,024 bytes), which is how Windows and most RAM reports count. Storage makers and macOS use decimal units (1 kB = 1,000 bytes), so both are shown below.