Terabyte to Gigabyte Converter (TB to GB)

1 terabyte = 1,000 gigabyte. With decimal prefixes 1 TB is 1,000 GB.

Value

Result

2,000

2 TB = 2,000 GB

How to convert terabyte to gigabyte

With decimal prefixes 1 TB is 1,000 GB. Hard drives, SSDs and cloud storage plans are labelled in terabytes, while individual files and downloads are measured in gigabytes.

Formula

GB = TB × 1,000

Worked example

2 TB × 1,000 = 2,000 GB

Terabyte to Gigabyte quick-reference table

Common terabyte to gigabyte values
Terabyte (TB)	Gigabyte (GB)
0.25 TB	250 GB
0.5 TB	500 GB
1 TB	1,000 GB
2 TB	2,000 GB
4 TB	4,000 GB
10 TB	10,000 GB

Real-life examples

A 2 TB drive holds 2,000 GB, enough for roughly 400 hours of 4K video at 5 GB per hour or about 500,000 photos at 4 MB each.

Frequently asked questions

How many GB are in a TB?

In SI units 1 TB is 1,000 GB. In the binary convention 1 TiB is 1,024 GiB.

How many GB does a 1 TB drive actually have?

It holds 1,000 GB as sold, which an operating system that uses binary units shows as about 931 GiB.

What is 1 terabyte in gigabyte?

1 terabyte = 1,000 gigabyte (TB to GB).

What is the formula to convert TB to GB?

GB = TB × 1,000. For example, 2 TB × 1,000 = 2,000 GB.

How do I convert GB back to TB?

Use the reverse converter: 1 gigabyte = 0.001 terabyte. Check: 2,000 GB converts back to 2 TB.

Reverse conversion

Need the other direction? Gigabyte to Terabyte converter (GB to TB): 1 gigabyte = 0.001 terabyte.

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