Petabytes (PB) to Gigabytes (GB) Converter
Type your storage value in the input field to find Gigabytes (GB) equivalent of your Petabyte (PB) value. 1 PB = 1,000,000 GB, calculated across both decimal (SI) and binary (IEC) standards.
Convert Petabytes to Gigabytes
Do you want to convert gigabytes to petabytes?
How to Convert Petabytes to Gigabytes
To convert petabytes to gigabytes, multiply by 1,000,000 (using SI decimal). Both units measure storage capacity—the difference is scale. Related: convert Gigabytes to Petabytes.
PB: A petabyte is 1,000 terabytes or 1,000,000,000,000,000 bytes. Used for large-scale enterprise and cloud storage. Try the Petabytes to Petabits calculator.
GB: A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use. Learn more: Nibbles to Gigabytes converter.
1 PB = 1,000,000 GB (using SI decimal standard) — which means there are 1,000,000gigabytes in every petabyte.
PB to GB Conversion Formula
// Convert PB to GB
GB = PB × 1,000,000
// Reverse: Convert GB to PB
PB = GB × 0.000001
Petabyte to Gigabyte Conversion Examples
100 PB = 100,000,000 GB
256 PB = 256,000,000 GB
500 PB = 500,000,000 GB
1,000 PB = 1,000,000,000 GB
2,048 PB = 2,048,000,000 GB
Binary Standard (Base 1024)
Using binary calculation: 1 PB = 1,048,576 GB
100 PB = 104,857,600 GB
1,000 PB = 1,048,576,000 GB
1,024 PB = 1,073,741,824 GB
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. See also: Yobibytes to Gigabits.
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: Ybps → ZB/s.
Common uses: Data centers, cloud storage providers, scientific research, enterprise archives Learn more: convert PB to Tb.
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 Gigabyte?
A gigabyte is 1,000 megabytes or 1,000,000,000 bytes using the SI decimal standard. This is what hard drive manufacturers typically use. See also: Eb to GB calculator.
The gigabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. Use our Zib to GiB converter.
Common uses: Movies, video games, smartphone storage, USB drives, cloud storage plans Try the bps to KB/s.
1 GB = 8 × 10⁹ bits = 1 × 10⁹ bytes.
The gigabyte can be abbreviated as GB; for example, 1 gigabyte can be written as 1 GB.
Petabyte to Gigabyte Conversion Table
The table below shows various petabyte measurements converted to gigabytes.
| Petabytes | Gigabytes | Gigabytes (Binary) |
|---|---|---|
| 1 PB | 1,000,000 GB | 1,048,576 GB |
| 2 PB | 2,000,000 GB | 2,097,152 GB |
| 5 PB | 5,000,000 GB | 5,242,880 GB |
| 10 PB | 10,000,000 GB | 10,485,760 GB |
| 25 PB | 25,000,000 GB | 26,214,400 GB |
| 50 PB | 50,000,000 GB | 52,428,800 GB |
| 100 PB | 100,000,000 GB | 104,857,600 GB |
| 128 PB | 128,000,000 GB | 134,217,728 GB |
| 250 PB | 250,000,000 GB | 262,144,000 GB |
| 256 PB | 256,000,000 GB | 268,435,456 GB |
| 500 PB | 500,000,000 GB | 524,288,000 GB |
| 512 PB | 512,000,000 GB | 536,870,912 GB |
| 1,000 PB | 1,000,000,000 GB | 1,048,576,000 GB |
| 1,024 PB | 1,024,000,000 GB | 1,073,741,824 GB |
SI Decimal vs Binary: Why Two Different Standards?
When converting petabytes to gigabytes, 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 |
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.