In 1 terabytes there are 8,000,000,000,000 bits. Meanwhile in 1 bits there are 1.25000e-13 terabytes. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Bits to Terabytes calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert terabytes (TB) to bits, use the fact that 1 byte = 8 bits. Then pick the terabyte type you need, since TB can mean decimal or binary.
Decimal terabytes (common for storage makers):
1 TB = 10¹² bytes
bits = TB × 10¹² × 8
So, 1 TB = 8,000,000,000,000 bits
Binary tebibytes (common in some computer systems):
1 TiB = 2⁴⁰ bytes = 1,099,511,627,776 bytes
bits = TiB × 2⁴⁰ × 8
So, 1 TiB = 8,796,093,022,208 bits
Quick tip: If you see TB, it often means decimal. If you see TiB, it’s the binary value.
It depends on the standard you use. In decimal (SI) units, 1 terabyte equals 1,000,000,000,000 bytes. Since 1 byte equals 8 bits, that is 8,000,000,000,000 bits.
In binary units, people often mean 1 tebibyte (TiB), which equals 1,099,511,627,776 bytes. That equals 8,796,093,022,208 bits.
Use this basic formula:
bits = terabytes × bytes-per-terabyte × 8
In decimal terms, yes. 1 TB = 1,000 GB.
In binary terms, storage can be shown using tebibytes instead. In that system, 1 TiB = 1,024 GiB.
This difference is why the same device can show different numbers in different systems.
TB is usually decimal, based on powers of 10. TiB is binary, based on powers of 2.
The binary value is larger because a tebibyte contains more bytes.
Using decimal terabytes:
If the value is 2 TiB instead, the result is 17,592,186,044,416 bits.
Using decimal terabytes:
Using decimal terabytes:
Results differ because some sources use decimal terabytes (TB) while others use binary tebibytes (TiB). Both appear in real life, so it’s easy to mix them up.
If you need an exact answer, confirm whether the value is TB (decimal) or TiB (binary).
No. A bit is a single 0 or 1. A byte is a group of bits.
Most modern systems use:
So converting bytes to bits means multiplying by 8.
This conversion helps when you need to match data size to bit-based rates or totals. Common cases include:
Drive labels usually use decimal units. That means 1 TB on the label equals 8,000,000,000,000 bits.
Some operating systems show capacity using binary units, so the displayed number may look smaller even though the drive has the same total bytes.
The Calculate Box tool to convert terabytes to bits uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a terabytes value in the box and have it instantly converted to bits.