Terabytes to Bits
Type a value in either box to convert between terabytes and bits. The factor is 8e+12.
| Terabytes | Bits |
|---|---|
| 1 TB | 8e+12 bit |
| 2 TB | 1.6e+13 bit |
| 3 TB | 2.4e+13 bit |
| 5 TB | 4e+13 bit |
| 10 TB | 8e+13 bit |
| 25 TB | 2e+14 bit |
| 50 TB | 4e+14 bit |
| 100 TB | 8e+14 bit |
How to use
- Enter a value in the Terabytes field.
- The Bits figure appears immediately — no button to press.
- Typing in the Bits field converts back to Terabytes the same way.
- Use the reference table for the values that come up most often.
Terabytes to Bits formula
To convert terabytes to bits, multiply by 8e+12.
bit = TB × 8e+12
Why this factor: the terabyte and the bit are both defined against the byte, so dividing one definition by the other gives 8e+12 directly. Both definitions are set out in full below.
To go the other way, divide by 8e+12 — or use the Bits to Terabytes converter, which is the same calculation reversed.
Worked example
Given 500 TB, multiplying by 8e+12 yields 4e+15 bit.
500 TB × 8e+12 = 4e+15 bit
The converter above does this for any value you type, in either direction.
What is a terabyte?
A terabyte is one trillion bytes, the standard capacity unit for hard drives and large archives.
Definition: Exactly 1×10¹² bytes under SI prefixes. The binary tebibyte (TiB) is about 1.1×10¹² bytes.
Where it is used: Hard drive and SSD capacity, backup archives, and database sizes.
Worth knowing: A 1 TB drive reports as roughly 931 GiB in an operating system that counts in powers of two — the storage is not missing, just labelled differently.
What is a bit?
A bit is the smallest unit of digital information — a single binary digit, either 0 or 1.
Definition: One eighth of a byte. The name is a contraction of 'binary digit'.
Where it is used: Network and connection speeds, which are always quoted in bits per second.
Worth knowing: Lowercase 'b' is bits, uppercase 'B' is bytes. A 100 Mb/s connection delivers about 12.5 MB/s.
Terabytes vs Bits
The terabyte and the bit belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many bits are in a terabyte?
One terabyte equals 8e+12 bits.
What is the formula to convert terabytes to bits?
Multiply the number of terabytes by 8e+12. To reverse it, divide by 8e+12 instead.
How do I convert bits back to terabytes?
Divide by 8e+12, which is the same as multiplying by 1.25e-13.
How many bits are in 10 terabytes?
10 TB works out to 8e+13 bit.
Is there anything to watch out for with terabytes?
A 1 TB drive reports as roughly 931 GiB in an operating system that counts in powers of two — the storage is not missing, just labelled differently.
How is the terabyte defined?
Exactly 1×10¹² bytes under SI prefixes. The binary tebibyte (TiB) is about 1.1×10¹² bytes.