Bytes to Petabytes
Convert bytes to petabytes instantly — one byte is 1e-15 petabytes.
| Bytes | Petabytes |
|---|---|
| 1 B | 1e-15 PB |
| 2 B | 2e-15 PB |
| 3 B | 3e-15 PB |
| 5 B | 5e-15 PB |
| 10 B | 1e-14 PB |
| 25 B | 2.5e-14 PB |
| 50 B | 5e-14 PB |
| 100 B | 1e-13 PB |
How to use
- Enter a value in the Bytes field.
- The Petabytes figure appears immediately — no button to press.
- Typing in the Petabytes field converts back to Bytes the same way.
- Use the reference table for the values that come up most often.
Bytes to Petabytes formula
Converting bytes to petabytes is a single multiplication by 1e-15.
PB = B × 1e-15
Why this factor: the byte and the petabyte are both defined against the byte, so dividing one definition by the other gives 1e-15 directly. Both definitions are set out in full below.
To go the other way, divide by 1e-15 — or use the Petabytes to Bytes converter, which is the same calculation reversed.
Worked example
Take 500 B and multiply by the factor 1e-15: the result is 5e-13 PB.
500 B × 1e-15 = 5e-13 PB
The converter above does this for any value you type, in either direction.
What is a byte?
A byte is eight bits — historically the space for one text character, and the standard unit of file size.
Definition: Exactly 8 bits.
Where it is used: File and storage sizes, memory capacity, and data quotas.
What is a petabyte?
A petabyte is a thousand terabytes — the scale of large-scale data infrastructure.
Definition: Exactly 1×10¹⁵ bytes under SI prefixes.
Where it is used: Data-centre and cloud storage footprints, scientific datasets, and media archives.
Bytes vs Petabytes
The byte and the petabyte belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many petabytes are in a byte?
One byte equals 1e-15 petabytes.
What is the formula to convert bytes to petabytes?
Multiply the number of bytes by 1e-15. To reverse it, divide by 1e-15 instead.
How do I convert petabytes back to bytes?
Divide by 1e-15, which is the same as multiplying by 1e+15.
How many petabytes are in 10 bytes?
10 B works out to 1e-14 PB.
How is the byte defined?
Exactly 8 bits.