How do you convert terabytes to terabits?

To convert terabytes (TB) to terabits (Tb), multiply the data size in terabytes by 8 (terabits = terabytes × 8).

What is 5 terabytes in terabits?

5 terabytes (5 TB) is equal to 40 terabits (40 Tb).

Which is larger, 1 terabyte (decimal) (TB) or 1 terabit (Tb)?

One terabyte (decimal) (TB) is larger than one terabit (Tb). Specifically, 1 TB contains 8 Tb, whereas 1 Tb is 0.125 TB.

How do I convert back from terabits (Tb) to terabytes (TB)?

To reverse the calculation from Tb to TB, multiply your terabit value by the inverse factor 0.125 (or divide by 8). 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 TB 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).

Terabytes to Terabits Converter

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

Terabits to Terabytes (Tb → TB)

Convert Terabytes to Terabits

Enter a value in terabytes (TB) to convert to terabits (Tb).

Value (TB)

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40terabits

5 TB = 40 Tb

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Suggested Conversions

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

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Terabyte to Terabit Conversion Table

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

Terabytes (TB)	Terabits (Tb)
1 TB	8 Tb
2 TB	16 Tb
2.5 TB	20 Tb
5 TB	40 Tb
10 TB	80 Tb
15 TB	120 Tb
20 TB	160 Tb
25 TB	200 Tb
30 TB	240 Tb
50 TB	400 Tb

How to Convert Terabytes to Terabits

To convert terabytes to terabits, multiply the data size by the following conversion ratio: 8 terabits/terabyte.

Since one terabyte is equal to 8 terabits, you can use this simple formula to convert:

terabits = terabytes × 8

The data size in terabits is equal to the data size in terabytes multiplied by 8.

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

terabits = (5 TB × 8) = 40 Tb

How Many Terabits Are in a Terabyte?

There are 8 terabits in a terabyte, which is why we use this value in the formula above.

1 TB = 8 Tb|1 Tb = 0.125 TB

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

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

What Is a Terabyte?

A terabyte is a unit of data size equal to 1e+12 bytes (B), the base unit for data size. SI decimal standard: 1,000,000,000,000 bytes (1,000 GB). [1]

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

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

In practice, terabytes (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 terabytes 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 terabytes (TB) and terabits (Tb), keep full floating-point precision (1 TB = 8 Tb; 1 Tb = 0.125 TB) during intermediate calculations and round only the final terabit figure to match your instrument tolerance.

More Terabyte & Terabit Conversions

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

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Frequently Asked Questions

There are 8 terabits (Tb) in 1 terabyte (TB). Conversely, 1 terabit (Tb) is equal to 0.125 terabytes (TB).

Digital Storage Converter

Quick Info

Direct Factor: 1 terabyte (decimal) (TB) equals 8 terabits (Tb).
Inverse Factor: 1 terabit (Tb) equals 0.125 terabytes (TB).
Formula: terabits = terabytes × 8.
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

Terabyte (Decimal) (TB)

SI decimal standard: 1,000,000,000,000 bytes (1,000 GB).

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 — Terabytes (TB) to Terabits (Tb)
NIST / IEC Standard
[2]
BIPM (SI Decimal Prefixes (k, M, G, T, P))·Unit Specifications: Terabyte (Decimal) (TB) & Terabit (Tb)
BIPM Specification
[3]
NIST CUU (SI Prefixes & Decimal Multiples)·Conversion Factors & Mathematical Basis (TB to Tb)
NIST CUU Reference

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