Terabit to Gigabit Converter

Data Converter

21 units available

Decimals:

From

To

1,024

1 Tb = 1,024 Gb

Formula:

Gb = Tb × 1,024

With your value: 1 Tb = 1,024 Gb

How big is that?

Everyday references on a logarithmic scale, all expressed in terabit so you can sanity-check the result.

Phone photo (1/3.4e+4 your value)0.00000364 Tb

MP3 song (1/2.7e+4 your value)0.00000455 Tb

CD-ROM (1/2.0e+2 your value)0.000637 Tb

HD movie (1/34 your value)0.00364 Tb

Your value0.125 Tb

Laptop SSD (3.7× your value)0.466 Tb

Other Terabit to Gigabit conversions

2 Tb to Gb 3 Tb to Gb 4 Tb to Gb 5 Tb to Gb 6 Tb to Gb 7 Tb to Gb 8 Tb to Gb

Terabit to Gigabit Conversion Table

Terabit (Tb)	Gigabit (Gb)
0.5	512
1	1,024
2	2,048
5	5,120
10	10,240
15	15,360
20	20,480
25	25,600
50	51,200
100	102,400
250	256,000
500	512,000
1000	1,024,000

Gigabit to Terabit Conversion Table

Gigabit (Gb)	Terabit (Tb)
0.5	0.000488
1	0.000977
2	0.001953
5	0.004883
10	0.009766
15	0.014648
20	0.019531
25	0.024414
50	0.048828
100	0.097656
250	0.244141
500	0.488281
1000	0.976563

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Terabit (Tb)

Data

Conventional value

Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

Gigabit (Gb)

Data

Conventional value

Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

How to Convert Terabit to Gigabit

To convert from Terabit (Tb) to Gigabit (Gb), multiply the value by 1,024.

Formula: Gb = Tb × 1,024

Reverse: Tb = Gb × 0.0009765625

Step-by-Step Example

Start with your value in Terabit. For example: 5 Tb
Multiply by the conversion factor: 5 x 1,024
The result is: 5,120 Gb

About Terabit

The terabit (Tb) is a unit of digital storage. One terabit equals 1.374390 × 10^+11 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

About Gigabit

The gigabit (Gb) is a unit of digital storage. One gigabit equals 1.342177 × 10^+8 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

Frequently Asked Questions

How many Gigabit are in 1 Terabit?

There are exactly 1,024 Gigabit in 1 Terabit. This means the conversion factor from Terabit to Gigabit is 1,024.

What is the formula to convert Terabit to Gigabit?

The formula to convert Terabit to Gigabit is: Gb = Tb × 1,024. For example, to convert 10 Terabit to Gigabit, you would multiply 10 by 1,024.

What is a Terabit?