Petabytes to Kilobytes
Type a value in either box to convert between petabytes and kilobytes. The factor is 1e+12.
| Petabytes | Kilobytes |
|---|---|
| 1 PB | 1e+12 KB |
| 2 PB | 2e+12 KB |
| 3 PB | 3e+12 KB |
| 5 PB | 5e+12 KB |
| 10 PB | 1e+13 KB |
| 25 PB | 2.5e+13 KB |
| 50 PB | 5e+13 KB |
| 100 PB | 1e+14 KB |
How to use
- Enter a value in the Petabytes field.
- The Kilobytes figure appears immediately — no button to press.
- Typing in the Kilobytes field converts back to Petabytes the same way.
- Use the reference table for the values that come up most often.
Petabytes to Kilobytes formula
Converting petabytes to kilobytes is a single multiplication by 1e+12.
KB = PB × 1e+12
Why this factor: the petabyte and the kilobyte are both defined against the byte, so dividing one definition by the other gives 1e+12 directly. Both definitions are set out in full below.
To go the other way, divide by 1e+12 — or use the Kilobytes to Petabytes converter, which is the same calculation reversed.
Worked example
Take 500 PB and multiply by the factor 1e+12: the result is 5e+14 KB.
500 PB × 1e+12 = 5e+14 KB
The converter above does this for any value you type, in either direction.
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.
What is a kilobyte?
A kilobyte is 1,000 bytes in the decimal convention used by storage manufacturers and standards bodies.
Definition: Exactly 1,000 bytes under SI prefixes. The binary equivalent, 1,024 bytes, is properly the kibibyte (KiB).
Where it is used: Small file sizes, text documents, and web page weights.
Worth knowing: This decimal-versus-binary split is why a '1 TB' drive shows as about 931 GB in Windows: the drive uses 10¹², the OS displays 2⁴⁰.
Petabytes vs Kilobytes
The petabyte and the kilobyte 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 kilobytes are in a petabyte?
One petabyte equals 1e+12 kilobytes.
What is the formula to convert petabytes to kilobytes?
Multiply the number of petabytes by 1e+12. To reverse it, divide by 1e+12 instead.
How do I convert kilobytes back to petabytes?
Divide by 1e+12, which is the same as multiplying by 1e-12.
How many kilobytes are in 10 petabytes?
10 PB works out to 1e+13 KB.
Is there anything to watch out for with kilobytes?
This decimal-versus-binary split is why a '1 TB' drive shows as about 931 GB in Windows: the drive uses 10¹², the OS displays 2⁴⁰.
How is the petabyte defined?
Exactly 1×10¹⁵ bytes under SI prefixes.