Petabytes to Bytes
Convert petabytes to bytes instantly. 1 PB = 1e+15 B. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert petabytes to bytes
To convert petabytes to bytes, multiply by 1e+15. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
B = PB × 1e+15
Petabytes to Bytes conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Petabytes | Bytes |
|---|---|
| 1 PB | 1,000,000,000,000,000 B |
| 2 PB | 2,000,000,000,000,000 B |
| 3 PB | 3,000,000,000,000,000 B |
| 5 PB | 5,000,000,000,000,000 B |
| 10 PB | 10,000,000,000,000,000 B |
| 20 PB | 20,000,000,000,000,000 B |
| 25 PB | 25,000,000,000,000,000 B |
| 50 PB | 50,000,000,000,000,000 B |
| 100 PB | 100,000,000,000,000,000 B |
| 500 PB | 500,000,000,000,000,000 B |
| 1,000 PB | 1,000,000,000,000,000,000 B |
What is a petabyte?
A thousand terabytes, the scale of large data centres.
What is a byte?
Eight bits, the smallest addressable unit in most computers.
The formula
B = PB × 1e+15
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Petabytes to Bytes
- Type the number of petabytes you want to convert.
- Read the result in bytes straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked bytes to petabytes page.
Petabytes to Bytes — frequently asked questions
How many bytes are in a petabyte?
One petabyte equals 1e+15 B. B = PB × 1e+15
What is the formula to convert petabytes to bytes?
The formula is B = PB × 1e+15. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert bytes back to petabytes?
Divide instead of multiplying: one byte is 1e-15 PB. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this petabytes to bytes free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the petabytes to bytes.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error