How many gigabytes are in one terabyte?

There are 1,000 gigabytes in 1 terabyte.

How do you convert gigabytes to terabytes?

Multiply the number of gigabytes by 0.001 — or use the formula TB = GB ÷ 1,000.

What is 32 gigabytes in terabytes?

32 gigabytes is 0.032 terabytes. 32 ÷ 1,000 = 0.032 terabytes.

Is the gigabytes to terabytes conversion exact?

Yes. The relationship is fixed by definition, so 0.001 is an exact conversion factor — only the displayed result is rounded.

Gigabytes to Terabytes Converter

Convert gigabytes to terabytes instantly with this free gigabytes to terabytes converter. Enter any value to get an accurate data storage conversion, plus the formula, the conversion factor and a full reference table.

What is 1 gigabyte in terabytes?

1 gigabyte is equal to exactly 0.001 terabytes.

1 ÷ 1,000 = 0.001 terabytes

Amount

Result0.001

1 gigabyte = 0.001 terabytes

Gigabytes to Terabytes formula

TB = GB ÷ 1,000

The gigabytes to terabytes conversion factor is 0.001, which is exact by definition. 1 gigabyte = 0.001 terabytes, and 1 terabyte = 1,000 gigabytes.

Worked examples

2 gigabytes = 0.002 terabytes — 2 ÷ 1,000 = 0.002 terabytes
32 gigabytes = 0.032 terabytes — 32 ÷ 1,000 = 0.032 terabytes
256 gigabytes = 0.256 terabytes — 256 ÷ 1,000 = 0.256 terabytes

Gigabytes to Terabytes conversion table

Every value below is calculated with the exact conversion factor and rounded for display.

gigabytes to terabytes conversion table
Gigabytes (GB)	Terabytes (TB)
1 GB	0.001 TB
2 GB	0.002 TB
4 GB	0.004 TB
8 GB	0.008 TB
16 GB	0.016 TB
32 GB	0.032 TB
64 GB	0.064 TB
100 GB	0.1 TB
128 GB	0.128 TB
256 GB	0.256 TB
512 GB	0.512 TB
1,000 GB	1 TB
1,024 GB	1.024 TB
2,048 GB	2.048 TB

When you need to convert gigabytes to terabytes

Checking whether a file fits inside a storage or upload limit.
Working out how much of a mobile data allowance a download will use.
Reconciling the capacity printed on a drive with the smaller figure the operating system reports.

Getting a feel for the scale

A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.

Gigabyte (GB)

An hour of HD streaming uses about 3 GB
A modern phone photo library is tens of GB

Common mistakes to avoid

Dividing when you should multiply. Because 1 gigabyte = 0.001 terabytes, the answer should be smaller than the number you started with.
Treating 1 kB as 1,024 bytes. Storage and network figures use decimal units of 1,000; operating systems usually report binary units of 1,024, which is why a 1 TB drive shows as about 931 GiB.
Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.

How precise does the answer need to be?

Round to two decimals for human-readable sizes. When you are checking a hard limit, use the exact figure: a file 0.4% over an upload cap still fails.

How these units are defined

Gigabyte (GB): 1,000,000,000 bytes in decimal (SI) notation. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Terabyte (TB): One trillion bytes in decimal notation. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.

Frequently asked questions

What is 1 gigabyte in terabytes?: 1 gigabyte is equal to 0.001 terabytes.
How many gigabytes are in one terabyte?: There are 1,000 gigabytes in 1 terabyte.
How do you convert gigabytes to terabytes?: Multiply the number of gigabytes by 0.001 — or use the formula TB = GB ÷ 1,000.
What is 32 gigabytes in terabytes?: 32 gigabytes is 0.032 terabytes. 32 ÷ 1,000 = 0.032 terabytes.
Is the gigabytes to terabytes conversion exact?: Yes. The relationship is fixed by definition, so 0.001 is an exact conversion factor — only the displayed result is rounded.