Gigabytes to Terabytes Converter GB → TB

1 gigabyte (GB) = 0.001 terabytes (TB). Type a value below — the conversion happens instantly, entirely on your device.

From

1 GB = 0.001 TB

Precision

500 gigabytes = 0.5 terabytes

500 × 0.001 = 0.5

1 GB equals 0.001 TB, so multiplying by 0.001 converts the value. The result describes the exact same quantity — only the measuring stick changes.

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How to convert gigabytes to terabytes

terabytes = gigabytes × 0.001 — multiply the gigabyte value by 0.001.

Example: 500 GB = 0.5 TB.

To convert the other way: gigabytes = terabytes ÷ 0.001 — or use the dedicated TB to GB converter .

1 TB = 1,000 GB (decimal standard), so 500 GB is 0.5 TB. Cloud storage plans and drives are marketed in decimal units; Windows reports binary units, so a 2 TB drive shows as about 1.82 "TB" (really TiB).

Gigabytes to Terabytes conversion table

Gigabytes (GB)	Terabytes (TB)
0.1	0.0001
0.25	0.00025
0.5	0.0005
1	0.001
2	0.002
3	0.003
4	0.004
5	0.005
6	0.006
7	0.007
8	0.008
9	0.009
10	0.01
15	0.015
20	0.02
25	0.025
30	0.03
40	0.04
50	0.05
75	0.075
100	0.1
250	0.25
500	0.5
1000	1

About the units

What is a gigabyte?

A gigabyte (GB) is 1,000,000,000 bytes (decimal standard). Storage devices and mobile data plans are sold in gigabytes; an hour of HD streaming uses roughly 3 GB.

What is a terabyte?

A terabyte (TB) is 1,000 gigabytes (decimal standard). Hard drives and cloud storage tiers are commonly 1–4 TB; a 1 TB drive appears as about 931 GiB in Windows.

Frequently asked questions

How many terabytes are in 1 gigabyte?

1 gigabyte (GB) = 0.001 terabytes (TB).

What is the formula to convert gigabytes to terabytes?

terabytes = gigabytes × 0.001 — multiply the gigabyte value by 0.001.

How do I convert GB to TB without a calculator?

Multiply by 0.001 for a close estimate. Exact factor: 1 GB = 0.001 TB.

Is this GB-to-TB converter accurate and private?

Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.