Terabytes to Petabytes
A terabyte is 1,000 gigabytes, the typical size for hard drives and cloud storage plans today. A petabyte is 1,000 terabytes, a scale used by data centers and large-scale cloud storage systems. 1 TB equals 0.001 PB, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to data, measured here against data's base unit (bit) — every other data unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
PB = TB × 0.001
TB = PB × 1,000
Worked example: 5 TB × 0.001 = 0.005 PB.
Conversion table
| Terabyte (TB) | Petabyte (PB) |
|---|---|
| 1 TB | 0.001 PB |
| 2 TB | 0.002 PB |
| 3 TB | 0.003 PB |
| 5 TB | 0.005 PB |
| 10 TB | 0.01 PB |
| 20 TB | 0.02 PB |
| 25 TB | 0.025 PB |
| 50 TB | 0.05 PB |
| 100 TB | 0.1 PB |
| 250 TB | 0.25 PB |
| 500 TB | 0.5 PB |
| 1,000 TB | 1 PB |
Frequently asked
- How many Petabytes in a terabyte?
- 1 TB equals 0.001 PB.
- How do I convert Terabytes to Petabytes?
- Multiply the value in TB by 0.001 to get PB. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Terabyte and Petabyte are both defined by a fixed conversion factor to data's base unit (bit), so the result shown is exact to the precision displayed, not an approximation.