Petabytes (PB) to Exbibytes (EiB) Converter
Enter your Petabytes (PB) value to convert to Exbibytes (EiB). 1 PB = 0.000867361738 EiB, calculated across both decimal (SI) and binary (IEC) standards.
Convert Petabytes to Exbibytes
Do you want to convert exbibytes to petabytes?
How to Convert Petabytes to Exbibytes
To convert petabytes (decimal/SI) to exbibytes (binary/IEC), multiply by 0.000867361738. Decimal units use base 1,000, while binary units use base 1,024. Related: EiB to PB calculator.
PB is a decimal (SI) unit—what storage manufacturers advertise. 1 PB = 1,000 of the smaller unit. Check out our PB to KB converter.
EiB is a binary (IEC) unit—what operating systems often display. 1 EiB = 1,024 of the smaller unit. Use our Kib to EiB.
1 PB = 0.000867361738 EiB (using SI decimal standard) — or equivalently, 1 EiB = 1,152.921505PB.
PB to EiB Conversion Formula
// Convert PB to EiB
EiB = PB × 0.000867361738
// Reverse: Convert EiB to PB
PB = EiB × 1,152.921505
PB to EiB Conversion Examples
100 PB = 0.086736173799 EiB
256 PB = 0.222044604925 EiB
500 PB = 0.433680868994 EiB
1,000 PB = 0.867361737988 EiB
2,048 PB = 1.7763568394 EiB
What Is a Petabyte?
A petabyte is 1,000 terabytes or 1,000,000,000,000,000 bytes. Used for large-scale enterprise and cloud storage. Related: Kibibits in Yobibytes.
The petabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. See also: converting Yobibytes Per Second to Zebibits Per Second.
Common uses: Data centers, cloud storage providers, scientific research, enterprise archives See also: PB to ZiB conversion rate.
1 PB = 8 × 10¹⁵ bits = 1 × 10¹⁵ bytes.
The petabyte can be abbreviated as PB; for example, 1 petabyte can be written as 1 PB.
What Is a Exbibyte?
An exbibyte is 1,024 pebibytes or 2^60 bytes. Used for hyperscale storage in binary measurements. Related: calculate TiB to EiB.
The exbibyte is a IEC binary unit of digital information storage. It uses base 1,024 following the IEC (International Electrotechnical Commission) standard. See also: how many Exabytes in a Pib.
Common uses: Hyperscale data centers, global storage statistics in binary, cloud provider capacity Use our how many KB/s in Megabits Per Second.
1 EiB = 9 × 10¹⁸ bits = 1 × 10¹⁸ bytes.
The exbibyte can be abbreviated as EiB; for example, 1 exbibyte can be written as 1 EiB.
Petabyte to Exbibyte Conversion Table
The table below shows various petabyte measurements converted to exbibytes.
| Petabytes | Exbibytes |
|---|---|
| 1 PB | 0.0008673617 EiB |
| 2 PB | 0.0017347235 EiB |
| 5 PB | 0.0043368087 EiB |
| 10 PB | 0.0086736174 EiB |
| 25 PB | 0.0216840434 EiB |
| 50 PB | 0.0433680869 EiB |
| 100 PB | 0.0867361738 EiB |
| 128 PB | 0.1110223025 EiB |
| 250 PB | 0.2168404345 EiB |
| 256 PB | 0.2220446049 EiB |
| 500 PB | 0.433680869 EiB |
| 512 PB | 0.4440892099 EiB |
| 1,000 PB | 0.867361738 EiB |
| 1,024 PB | 0.8881784197 EiB |
SI Decimal vs Binary: Why Two Different Standards?
When converting petabytes to exbibytes, different tools may give slightly different results. This is because there are two competing standards for measuring digital storage:
| Standard | Base | 1 KB equals | Used By |
|---|---|---|---|
| SI Decimal | 1000 | 1,000 bytes | Hard drive manufacturers, macOS, network speeds |
| Binary (IEC) | 1024 | 1,024 bytes | Windows, Linux (partially), RAM specifications |
Why Does My Hard Drive Show Less Space Than Advertised?
This difference in standards explains the common "missing hard drive space" confusion.
Example: A "500 GB" Hard Drive
- Contains exactly: 500,000,000,000 bytes
- macOS (SI Decimal): Displays 500 GB (divides by 1,000³)
- Windows (Binary): Displays 465 GB (divides by 1,024³)
The Verdict: Same bytes, same drive—just different math. No space is actually missing.
Note: Our calculator defaults to SI decimal (base 1000) to match the box label. To match Windows, toggle the standard at the top of the calculator.
💡 Storage Engineer Tip
The ~9.95% difference between binary and decimal units compounds at each level. A 1 TB drive shows as 931 GiB in Windows because of this standard mismatch—no space is actually lost.
— Subash Geetha Krishnan, 15+ years in enterprise storage
When to Convert PB to EiB
Common scenario: Reconciling the difference between what drive manufacturers advertise and what your operating system displays. Try the Petabytes to MiB.
Other situations include storage planning for calculating how much data fits in a given capacity, file management for understanding sizes across different scales, cost estimation for budgeting cloud storage, and backup planning for determining media requirements. Try the Zebibits to EiB calculator.