How do you convert gigabytes to terabits?

To convert gigabytes (GB) to terabits (Tb), multiply the data size in gigabytes by 0.008 (terabits = gigabytes × 0.008).

What is 5 gigabytes in terabits?

5 gigabytes (5 GB) is equal to 0.04 terabits (0.04 Tb).

Which is larger, 1 gigabyte (decimal) (GB) or 1 terabit (Tb)?

One terabit (Tb) is larger than one gigabyte (decimal) (GB). Specifically, 1 Tb equals 125 GB, while 1 GB is 0.008 Tb.

How do I convert back from terabits (Tb) to gigabytes (GB)?

To reverse the calculation from Tb to GB, multiply your terabit value by the inverse factor 125 (or divide by 0.008). You can also click the Swap button in the tool above to flip directions in one click.

Are there regional or standard differences when converting GB and Tb?

Decimal SI (Base-10) vs. Binary IEC (Base-2) & Bits vs. Bytes: Networking speeds and storage drive manufacturers use SI decimal prefixes (1 kB = 1,000 bytes, 1 MB = 1,000,000 bytes, 1 GB = 10⁹ bytes), whereas operating systems and RAM often report binary IEC prefixes (1 KiB = 1,024 bytes, 1 MiB = 1,048,576 bytes, 1 GiB = 1,073,741,824 bytes). Also note that lowercase 'b' denotes bits while uppercase 'B' denotes Bytes (1 Byte = 8 bits).

Gigabytes to Terabits Converter

Enter the data size in gigabytes below to convert it to terabits.

Terabits to Gigabytes (Tb → GB)

Convert Gigabytes to Terabits

Enter a value in gigabytes (GB) to convert to terabits (Tb).

Value (GB)

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0.04terabits

5 GB = 0.04 Tb

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Suggested Conversions

Reference:NIST / IEC (IEC 80000-13 Binary Prefixes)

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Gigabyte to Terabit Conversion Table

Table showing various gigabyte measurements converted to terabits. Click any preset value or arrow to load it into the converter.

Gigabytes (GB)	Terabits (Tb)
1 GB	0.008 Tb
2 GB	0.016 Tb
2.5 GB	0.02 Tb
5 GB	0.04 Tb
10 GB	0.08 Tb
15 GB	0.12 Tb
20 GB	0.16 Tb
25 GB	0.2 Tb
30 GB	0.24 Tb
50 GB	0.4 Tb

How to Convert Gigabytes to Terabits

To convert gigabytes to terabits, multiply the data size by the following conversion ratio: 0.008 terabits/gigabyte.

Since one gigabyte is equal to 0.008 terabits, you can use this simple formula to convert:

terabits = gigabytes × 0.008

The data size in terabits is equal to the data size in gigabytes multiplied by 0.008.

For example, here's how to convert 5 gigabytes to terabits using the formula above.

terabits = (5 GB × 0.008) = 0.04 Tb

How Many Terabits Are in a Gigabyte?

There are 0.008 terabits in a gigabyte, which is why we use this value in the formula above.

1 GB = 0.008 Tb|1 Tb = 125 GB

Our gigabyte to terabit calculator automatically converts your data size measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Gigabytes and terabits are both units used to measure data size. Keep reading to learn more about each unit.

What Is a Gigabyte?

A gigabyte is a unit of data size equal to 1,000,000,000 bytes (B), the base unit for data size. SI decimal standard: 1,000,000,000 bytes. [1]

The gigabyte is classified as a metric and SI-compatible unit of data size. Gigabytes can be abbreviated as GB; for example, 1 gigabyte can be written as 1 GB.

In the metric system, "giga" is the standard SI prefix for billions, or 10⁹. This makes the gigabyte (GB) a convenient decimal multiple of the byte (B).

In practice, gigabytes (GB) are widely used across large-scale industrial, bulk, and macro-level data size specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about gigabytes in our Digital Storage Converter.

What Is a Terabit?

A terabit is a unit of data size equal to 125,000,000,000 bytes (B), the base unit for data size. Equal to 10¹² bits (125 GB). [2]

The terabit is classified as a metric and SI-compatible unit of data size. Terabits can be abbreviated as Tb; for example, 1 terabit can be written as 1 Tb.

In the metric system, "tera" is the standard SI prefix for trillions, or 10¹². This makes the terabit (Tb) a convenient decimal multiple of the byte (B).

In practice, terabits (Tb) are widely used across large-scale industrial, bulk, and macro-level data size specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about terabits in our Digital Storage Converter.

When converting data size between gigabytes (GB) and terabits (Tb), keep full floating-point precision (1 GB = 0.008 Tb; 1 Tb = 125 GB) during intermediate calculations and round only the final terabit figure to match your instrument tolerance.

More Gigabyte & Terabit Conversions

Need to calculate in the opposite direction? Use our terabits to gigabytes calculator to switch your starting unit immediately. You can also explore related tools such as converting terabits to gigabytes, converting gigabytes to terabytes, or converting gigabytes to megabytes.

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Frequently Asked Questions

There are 0.008 terabits (Tb) in 1 gigabyte (GB). Conversely, 1 terabit (Tb) is equal to 125 gigabytes (GB).

Digital Storage Converter

Quick Info

Direct Factor: 1 gigabyte (decimal) (GB) equals 0.008 terabits (Tb).
Inverse Factor: 1 terabit (Tb) equals 125 gigabytes (GB).
Formula: terabits = gigabytes ÷ 125.
Standard Note: Decimal SI (Base-10) vs. Binary IEC (Base-2) & Bits vs. Bytes: Networking speeds and storage drive manufacturers use SI decimal prefixes (1 kB = 1,000 bytes, 1 MB = 1,000,000 bytes, 1 GB = 10⁹ bytes), whereas operating systems and RAM often report binary IEC prefixes (1 KiB = 1,024 bytes, 1 MiB = 1,048,576 bytes, 1 GiB = 1,073,741,824 bytes). Also note that lowercase 'b' denotes bits while uppercase 'B' denotes Bytes (1 Byte = 8 bits).

Units Comparison

Gigabyte (Decimal) (GB)

SI decimal standard: 1,000,000,000 bytes.

Terabit (Tb)

Equal to 10¹² bits (125 GB).

Byte (B)

8 binary bits.

References

[1]NIST / IEC · IEC 80000-13 Binary Prefixes
Source
[2]BIPM · SI Decimal Prefixes (k, M, G, T, P)
Source
[3]NIST CUU · SI Prefixes & Decimal Multiples
Source

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References

NIST · BIPM · ISO

[1]
NIST / IEC (IEC 80000-13 Binary Prefixes)·Digital Storage Metrology Standard — Gigabytes (GB) to Terabits (Tb)
NIST / IEC Standard
[2]
BIPM (SI Decimal Prefixes (k, M, G, T, P))·Unit Specifications: Gigabyte (Decimal) (GB) & Terabit (Tb)
BIPM Specification
[3]
NIST CUU (SI Prefixes & Decimal Multiples)·Conversion Factors & Mathematical Basis (GB to Tb)
NIST CUU Reference

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