Terabytes to Bytes
Type a value in either box to convert between terabytes and bytes. The factor is 1e+12.
| Terabytes | Bytes |
|---|---|
| 1 TB | 1e+12 B |
| 2 TB | 2e+12 B |
| 3 TB | 3e+12 B |
| 5 TB | 5e+12 B |
| 10 TB | 1e+13 B |
| 25 TB | 2.5e+13 B |
| 50 TB | 5e+13 B |
| 100 TB | 1e+14 B |
How to use
- Enter a value in the Terabytes field.
- The Bytes figure appears immediately — no button to press.
- Typing in the Bytes field converts back to Terabytes the same way.
- Use the reference table for the values that come up most often.
Terabytes to Bytes formula
The factor from terabytes to bytes is 1e+12.
B = TB × 1e+12
Why this factor: the terabyte and the byte are both defined against the byte, so dividing one definition by the other gives 1e+12 directly. Both definitions are set out in full below.
To go the other way, divide by 1e+12 — or use the Bytes to Terabytes converter, which is the same calculation reversed.
Worked example
Start with 500 TB. Multiply by 1e+12 to get 5e+14 B.
500 TB × 1e+12 = 5e+14 B
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 byte?
A byte is eight bits — historically the space for one text character, and the standard unit of file size.
Definition: Exactly 8 bits.
Where it is used: File and storage sizes, memory capacity, and data quotas.
Terabytes vs Bytes
The terabyte and the byte 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 bytes are in a terabyte?
One terabyte equals 1e+12 bytes.
What is the formula to convert terabytes to bytes?
Multiply the number of terabytes by 1e+12. To reverse it, divide by 1e+12 instead.
How do I convert bytes back to terabytes?
Divide by 1e+12, which is the same as multiplying by 1e-12.
How many bytes are in 10 terabytes?
10 TB works out to 1e+13 B.
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.