How do I convert Gigabytes to Terabytes?

Divide gigabytes by 1000 (or multiply by 0.001). For example, 500 GB = 0.5 TB and 2000 GB = 2 TB.

How many GB are in one TB?

Using decimal (SI) units, 1 TB = 1000 GB. Using binary units, 1 TiB = 1024 GiB. This tool uses the decimal 1000 convention.

Should I use 1000 or 1024?

Storage vendors and most file managers use decimal (1 TB = 1000 GB). Some operating systems report binary (1 TiB = 1024 GiB). This converter uses 1000.

How do I convert TB back to GB?

Multiply terabytes by 1000. For example, 2 TB = 2000 GB. Type into the TB field and the tool converts instantly.

How many TB is a 4000 GB drive?

4000 GB equals 4 TB at the decimal 1000 factor.

What's the difference between TB and TiB?

TB is decimal (10^12 bytes); TiB is binary (2^40 = 1,099,511,627,776 bytes). A 1 TiB volume is about 1.1 TB. This tool works in decimal TB/GB.

Is my data uploaded anywhere?

No — every conversion runs locally in your browser and nothing is sent to any server.

Gigabytes to Terabytes Converter

This free converter changes gigabytes (GB) into terabytes (TB) and back again, updating live as you type. It’s useful for sizing hard drives, NAS arrays, backups, and cloud storage plans in consistent units.

How it works

Using decimal (SI) digital units — the convention storage vendors use — one terabyte equals one thousand gigabytes, so one gigabyte is 0.001 TB. The converter applies that single factor:

TB = GB × 0.001 (and GB = TB × 1000)

Type in the GB field to scale down, or the TB field to scale up. Note the binary alternative: 1 tebibyte (TiB) = 1024 gibibytes (GiB). This tool uses the decimal 1000 convention, not 1024.

Example

You bought a 2000 GB SSD and want the figure in terabytes:

2000 × 0.001 = 2 TB

So a 2000 GB drive is 2 terabytes in decimal units.

Gigabytes (GB)	Terabytes (TB)
1 GB	0.001 TB
100 GB	0.1 TB
500 GB	0.5 TB
1000 GB	1 TB

All calculations run entirely in your browser — no data is sent to any server.