In 1 terabytes there are 1,000,000,000 kilobytes. Meanwhile in 1 kilobytes there are 1.00000e-9 terabytes. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Kilobytes to Terabytes calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert terabytes to kilobytes (TB to KB), start by choosing the right standard. Most storage makers use the decimal (SI) system, where each step is a factor of 1,000.
Formula (SI):
KB = TB × 1,000,000,000
Examples:
Some systems use binary units. In that case you’ll see tebibytes (TiB) and kibibytes (KiB):
Formula (binary):
KiB = TiB × 1,073,741,824
For clear TB to KB results, match the system your device or spec uses (SI vs binary).
It depends on the system you use.
Many storage makers use decimal TB. Many computer systems use binary units.
TB (terabyte) is a decimal unit based on powers of 10.
TiB (tebibyte) is a binary unit based on powers of 2.
That difference is why the same drive can show a smaller size on a computer.
KB (kilobyte) is usually decimal: 1 KB = 1,000 bytes.
KiB (kibibyte) is binary: 1 KiB = 1,024 bytes.
Some apps label sizes as KB even when they mean KiB. That can cause confusion.
Use one of these, based on the unit system you need:
KB = TB × 1,000,000,000 KB = TiB × 1,073,741,824 KiB = TiB × 1,073,741,824 and KiB = TiB × 2^30Match the formula to how your device reports sizes.
Using decimal units:
2 TB = 2 × 1,000,000,000 KB = 2,000,000,000 KB
If you meant 2 TiB instead:
2 TiB = 2 × 1,073,741,824 KB = 2,147,483,648 KB
Using decimal units:
1.5 TB = 1.5 × 1,000,000,000 KB = 1,500,000,000 KB
Drive makers often use decimal units (TB and GB).
Operating systems often measure in binary (TiB and GiB), even if they show the decimal labels.
That mismatch makes the shown capacity look smaller.
They are mostly used for file size and storage capacity.
Speed is often shown in bits per second, like Mbps or Gbps. File transfers can be shown as MB/s or KB/s, which are bytes per second.
Yes. Converting through bytes helps avoid mistakes.
Decimal path:
1 TB = 1,000,000,000,000 bytes
1 KB = 1,000 bytes
So 1 TB = 1,000,000,000 KB
Binary path:
1 TiB = 1,099,511,627,776 bytes
1 KiB = 1,024 bytes
So 1 TiB = 1,073,741,824 KiB
Most hard drives and SSDs are sold using decimal TB. For those labels, use:
1 TB = 1,000,000,000 KB
If you are checking what your computer reports internally, you may need TiB math.
RAM is usually measured in binary units, even if labels don’t show it.
If you are working with memory sizes, binary units (TiB, GiB, MiB, KiB) often fit best.
Not always. In many storage and network contexts, 1 KB = 1,000 bytes.
In some computer memory contexts, people use KB to mean 1,024 bytes, which is really 1 KiB.
When accuracy matters, use KiB for 1,024 bytes and KB for 1,000 bytes.
The Calculate Box tool to convert terabytes to kilobytes 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 kilobytes.