Terabits to Bits Converter
Enter the data size in terabits below to convert it to bits.
Convert Terabits to Bits
Enter a value in terabits (Tb) to convert to bits (b).
Terabit to Bit Conversion Table
Table showing various terabit measurements converted to bits. Click any preset value or arrow to load it into the converter.
How to Convert Terabits to Bits
To convert terabits to bits, multiply the data size by the following conversion ratio: 1e+12 bits/terabit.
Since one terabit is equal to 1e+12 bits, you can use this simple formula to convert:
The data size in bits is equal to the data size in terabits multiplied by 1e+12.
For example, here's how to convert 5 terabits to bits using the formula above.
How Many Bits Are in a Terabit?
There are 1e+12 bits in a terabit, which is why we use this value in the formula above.
Our terabit to bit calculator automatically converts your data size measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Terabits and bits are both units used to measure data size. Keep reading to learn more about each unit.
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). [1]
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.
What Is a Bit?
A bit is a unit of data size equal to 1/8 of a byte (0.125 B). Basic binary digit (1/8 of a byte). [2]
The bit is classified as an IEC binary unit of data size. Bits can be abbreviated as b; for example, 1 bit can be written as 1 b.
When working with bits (b) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, bits (b) are widely used across standard data size applications within IEC binary workflows, engineering documentation, and technical data sheets.
When converting data size between terabits (Tb) and bits (b), keep full floating-point precision (1 Tb = 1e+12 b; 1 b = 1e-12 Tb) during intermediate calculations and round only the final bit figure to match your instrument tolerance.
More Terabit & Bit Conversions
Need to calculate in the opposite direction? Use our bits to terabits calculator to switch your starting unit immediately. You can also explore related tools such as converting bits to terabits, converting megabytes to gigabytes, or converting gigabytes to terabytes.
Frequently Asked Questions
References
- [1]NIST / IEC StandardNIST / IEC (IEC 80000-13 Binary Prefixes)·Digital Storage Metrology Standard — Terabits (Tb) to Bits (b)
- [2]BIPM SpecificationBIPM (SI Decimal Prefixes (k, M, G, T, P))·Unit Specifications: Terabit (Tb) & Bit (b)
- [3]NIST CUU ReferenceNIST CUU (SI Prefixes & Decimal Multiples)·Conversion Factors & Mathematical Basis (Tb to b)