Bits to Petabytes
Convert bits to petabytes instantly. 1 bit = 1.25e-16 PB. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert bits to petabytes
To convert bits to petabytes, divide by 8e+15 (multiply by 1.25e-16). 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.
PB = bit × 1.25e-16
Bits to Petabytes conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Bits | Petabytes |
|---|---|
| 1 bit | 1.25e-16 PB |
| 2 bit | 2.5e-16 PB |
| 3 bit | 3.75e-16 PB |
| 5 bit | 6.25e-16 PB |
| 10 bit | 1.25e-15 PB |
| 20 bit | 2.5e-15 PB |
| 25 bit | 3.125e-15 PB |
| 50 bit | 6.25e-15 PB |
| 100 bit | 1.25e-14 PB |
| 500 bit | 6.25e-14 PB |
| 1,000 bit | 1.25e-13 PB |
What is a bit?
A single binary digit — an eighth of a byte.
What is a petabyte?
A thousand terabytes, the scale of large data centres.
The formula
PB = bit × 1.25e-16
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 Bits to Petabytes
- Type the number of bits you want to convert.
- Read the result in petabytes 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 petabytes to bits page.
Bits to Petabytes — frequently asked questions
How many petabytes are in a bit?
One bit equals 1.25e-16 PB. PB = bit × 1.25e-16
What is the formula to convert bits to petabytes?
The formula is PB = bit × 1.25e-16. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert petabytes back to bits?
Divide instead of multiplying: one petabyte is 8e+15 bit. 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 bits to petabytes 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 bits to petabytes.
- bits to petabytes
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- how many petabytes in a bit
- bit2pb
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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