In 1 bits there are 1.25000e-13 terabytes. Meanwhile in 1 terabytes there are 8,000,000,000,000 bits. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Terabytes to Bits calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert bits to terabytes (TB), move up through the data units step by step. A bit (b) is the smallest unit. A byte (B) equals 8 bits. From there, each larger unit is usually 1,000 times bigger in decimal storage terms.
Decimal (common for storage) conversion
Bits to terabytes formula (decimal)
Quick example
Tip: Watch the b vs B case. b = bits, B = bytes. This detail changes the result by a factor of 8.
It depends on which terabyte you mean.
Storage makers often use TB (decimal). Many computer systems report TiB (binary).
TB uses base-10 units. It counts by powers of 1,000.
TiB uses base-2 units. It counts by powers of 1,024.
That small change adds up at large sizes. A drive sold as 1 TB shows up as about 0.91 TiB in many systems.
Use one of these formulas:
You divide by 8 first because 8 bits = 1 byte.
A simple method works every time:
This keeps units clear and reduces mistakes.
Only in the decimal system for terabytes.
So, 1 TB is not 1 trillion bits. It’s 8 trillion bits.
Most drive labels use TB (decimal). Many operating systems show size using binary units but may still label them as “TB.”
That mismatch explains why a new “1 TB” drive may look like about 931 GB (which is really 931 GiB).
Pick the unit you need and stick to it.
When comparing numbers, make sure both sides use the same unit.
A bit is tiny, so the number is very small.
It’s often easier to convert large bit counts into TB, not the other way around.
Using decimal TB:
For TiB, multiply by 8,796,093,022,208 bits per TiB.
Internet speed usually uses bits, like Mbps or Gbps. File sizes usually use bytes, like MB, GB, or TB.
A quick rule: 8 bits = 1 byte.
So 1 Gbps equals 0.125 GB per second in ideal conditions.
Yes. A terabyte is a byte-based unit. Bits are smaller and mainly used for data rates and low-level data work.
When you see TB, it means terabytes of bytes, even if you started with a number in bits.
Use TB when you want the same unit used on most storage packaging. Use TiB when matching many system-reported sizes.
For planning storage, it helps to note both. It keeps expectations clear when you buy drives or size backups.
The Calculate Box tool to convert bits to terabytes uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a bits value in the box and have it instantly converted to terabytes.