In 1 petabytes there are 1,000,000,000,000,000 bytes. Meanwhile in 1 bytes there are 1.00000e-15 petabytes. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Bytes to Petabytes calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert petabytes (PB) to bytes (B), use the SI rule where peta = 10^15.
Formula:
bytes = petabytes × 10^15
Example:
2.5 PB = 2.5 × 10^15 = 2,500,000,000,000,000 bytes
Extra reference points (SI):
It depends on the system you use.
Many storage makers use decimal PB. Many computer systems use binary units.
PB is a decimal unit based on powers of 10. PiB is a binary unit based on powers of 2.
They sound similar, but they don’t match in size.
That comes from mixing decimal and binary terms. In strict binary terms:
When people write 1 PB = 1024 TB, they often mean 1 PiB, not 1 PB.
Use this formula:
Examples:
Use this formula:
Examples:
In most modern storage and data size labeling, yes. A petabyte (PB) follows the SI standard:
If someone is talking about memory or OS reporting, they may mean PiB instead.
Using decimal PB:
Using binary PiB (if that’s what’s meant):
Using decimal PB:
That equals 10 trillion bytes.
Drive makers usually use decimal units:
Your operating system may show a smaller number because it may display in binary units.
Some systems report sizes in binary units (GiB, TiB) but label them with decimal-style names. That makes the number look smaller even when the byte count is correct.
A decimal PB converted to binary is:
Use the unit that matches your context:
When you share results, state whether you used PB or PiB to avoid confusion.
A decimal petabyte is easy to recall:
That’s a 1 followed by 15 zeros:
The Calculate Box tool to convert petabytes to bytes uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a petabytes value in the box and have it instantly converted to bytes.