Terabytes to Bytes Converter

Terabytes to Bytes

Convert terabytes (TB) to bytes (B). Both measure digital storage, and the conversion comes up in computing, storage, internet work.

The Formula

`` bytes = terabytes × 1000000000000 terabytes = bytes × 1e-12 `

One terabyte is 1,000,000,000,000 bytes, and one byte is 1.0000e-12 terabytes.

Conversion Table

Terabytes	Bytes
1 TB	1,000,000,000,000 B
2 TB	2,000,000,000,000 B
5 TB	5,000,000,000,000 B
10 TB	10,000,000,000,000 B
25 TB	25,000,000,000,000 B
50 TB	50,000,000,000,000 B
100 TB	100,000,000,000,000 B
500 TB	500,000,000,000,000 B
1,000 TB	1,000,000,000,000,000 B

The Other Direction

Bytes	Terabytes
1 B	1.0000e-12 TB
2 B	2.0000e-12 TB
5 B	5.0000e-12 TB
10 B	1.0000e-11 TB
25 B	2.5000e-11 TB
50 B	5.0000e-11 TB
100 B	1.0000e-10 TB
500 B	5.0000e-10 TB
1,000 B	1.0000e-9 TB

What Each Unit Is

Terabytes (TB) — 1,000,000,000,000 bytes in decimal usage. The unit of consumer drives since the late 2000s.

Bytes (B) — 8 bits. Coined at IBM in 1956 for the group of bits encoding one character.

A Sense of Scale

• A 1 TB drive shows as 931 GiB in Windows
• A 4K film master is several TB
• One ASCII character is 1 byte
• A UTF-8 emoji is often 4 bytes

Precision

The factor 1000000000000 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.

In Code

`javascript const terabyteToByte = (value) => value * 1000000000000; ``

Where This Conversion Comes Up

• Computing
• Storage
• Internet
• Media
• Backups

How Many Decimals Do You Need?

Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 TB with the factor truncated at each decimal place:

Decimals kept	Factor	137 TB becomes	Error
0	1000000000000	137,000,000,000,000	—
1	1000000000000	137,000,000,000,000	—
2	1000000000000	137,000,000,000,000	—
3	1000000000000	137,000,000,000,000	—
4	1000000000000	137,000,000,000,000	—

A rule that holds for any conversion: round once, at the end. Rounding the factor and then multiplying compounds the error through every subsequent calculation, while carrying full precision and rounding the final answer does not.

The right number of significant figures is set by your input, not by the converter. If you measured terabytes to three significant figures, the answer in bytes is only good to three — writing more digits claims precision the measurement never had.

Other Conversions From Terabytes

The same value in every other unit this converter supports for data:

From	To	Unit
1 TB	8,000,000,000,000 b	Bits
1 TB	8,000,000,000 Kb	Kilobits
1 TB	1,000,000,000 KB	Kilobytes
1 TB	8,000,000 Mb	Megabits
1 TB	1,000,000 MB	Megabytes
1 TB	1,000 GB	Gigabytes

Chaining conversions works — terabytes to metres to feet gives the same answer as terabytes to feet — but each step rounds, so a chain of three conversions carries three roundings. Convert directly where a direct factor exists.