Convert Terabytes to Petabytes (TB to PB)
1 terabyte (TB) = 0.001 petabytes (PB). 1 PB = 1000 TB. Example: 15 TB = 15 × 0.001 = 0.015 PB.
Also searched as terabytes to PB, terabytes in PB, terabytes into petabytes, TB to PB, TB in petabytes, TB into petabyte, terabyte to petabyte, TB to petabytes converter and how many petabytes in a terabyte.
1 TB = 0.001 PB
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk terabyte to petabyte converter to paste a column from Excel.
How to Convert Terabyte to Petabyte
- 1 TB = 0.001 PB
- 1 PB = 1000 TB
- Example: convert 15 TB to PB: 15 TB = 15 × 0.001 PB = 0.015 PB
Formula
PB = TB ÷ 1000
Derivation from SI units:
- 1 TB = 10¹² bytes = 1000 GB.
- 1 PB = 10¹⁵ bytes = 1000 TB.
- 1 TB = 8000000000000 bit ÷ 8 × 10¹⁵ bit per PB = 0.001 PB
Both units are defined exactly, so the factor is exact. Terabyte definition: terabyte; Petabyte definition: petabyte.
Worked examples
- A reading of 4 TB converts to 0.004 PB.
4 TB × 0.001 = 0.004 PB - A value of 12 TB is 0.012 PB.
12 TB × 0.001 = 0.012 PB
Terabyte to Petabyte conversion table
| Terabytes (TB) | Petabytes (PB) |
|---|---|
| 0.5 TB | 0.0005 PB |
| 1 TB | 0.001 PB |
| 2 TB | 0.002 PB |
| 4 TB | 0.004 PB |
| 8 TB | 0.008 PB |
| 10 TB | 0.01 PB |
| 12 TB | 0.012 PB |
| 16 TB | 0.016 PB |
| 20 TB | 0.02 PB |
| 24 TB | 0.024 PB |
Where it's used
Terabytes are used for hard drives and SSDs, while petabytes appear in data centres and cloud providers. Both measure amount of digital information, so the conversion is a fixed factor.
Terabyte to other data storage units
| Conversion | 1 TB equals |
|---|---|
| terabyte to petabyte | 0.001 PB |
| terabyte to byte | 1000000000000 B |
| terabyte to kilobyte | 1000000000 kB |
| terabyte to megabyte | 1000000 MB |
| terabyte to gigabyte | 1000 GB |
| terabyte to bit | 8000000000000 bit |
| terabyte to megabit | 8000000 Mbit |
| terabyte to kibibyte | 976562500 KiB |
Show 5 more units
| terabyte to mebibyte | 953674.3164 MiB |
|---|---|
| terabyte to gibibyte | 931.3225746 GiB |
| terabyte to kilobit | 8000000000 kbit |
| terabyte to gigabit | 8000 Gbit |
| terabyte to tebibyte | 0.9094947018 TiB |
Frequently asked questions
How many petabytes are in 1 terabyte?
1 TB = 0.001 PB.
How do I convert terabytes to petabytes?
Multiply the value in TB by 0.001, or divide it by 1000. For example, 15 TB × 0.001 = 0.015 PB.
Is the TB to PB conversion exact?
Yes. Both units are defined exactly, and 1 TB is exactly 0.001 PB.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Terabytes to Petabytes (TB to PB). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/terabytes-to-petabytes/
IEEE
Scientific Converters, "Convert Terabytes to Petabytes (TB to PB)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/terabytes-to-petabytes/