How do you convert petabytes to gigabytes?

To convert petabytes (PB) to gigabytes (GB), multiply the data size in petabytes by 1,000,000 (gigabytes = petabytes × 1,000,000).

What is 5 petabytes in gigabytes?

5 petabytes (5 PB) is equal to 5,000,000 gigabytes (5,000,000 GB).

Which is larger, 1 petabyte (decimal) (PB) or 1 gigabyte (decimal) (GB)?

One petabyte (decimal) (PB) is larger than one gigabyte (decimal) (GB). Specifically, 1 PB contains 1,000,000 GB, whereas 1 GB is 0.000001 PB.

How do I convert back from gigabytes (GB) to petabytes (PB)?

To reverse the calculation from GB to PB, multiply your gigabyte (decimal) value by the inverse factor 0.000001 (or divide by 1,000,000). You can also click the Swap button in the tool above to flip directions in one click.

Are there regional or standard differences when converting PB and GB?

Decimal SI (Base-10) vs. Binary IEC (Base-2) & Bits vs. Bytes: Networking speeds and storage drive manufacturers use SI decimal prefixes (1 kB = 1,000 bytes, 1 MB = 1,000,000 bytes, 1 GB = 10⁹ bytes), whereas operating systems and RAM often report binary IEC prefixes (1 KiB = 1,024 bytes, 1 MiB = 1,048,576 bytes, 1 GiB = 1,073,741,824 bytes). Also note that lowercase 'b' denotes bits while uppercase 'B' denotes Bytes (1 Byte = 8 bits).

Petabytes to Gigabytes Converter

Enter the data size in petabytes below to convert it to gigabytes.

Gigabytes to Petabytes (GB → PB)

Convert Petabytes to Gigabytes

Enter a value in petabytes (PB) to convert to gigabytes (GB).

Value (PB)

From

Result

•

5,000,000gigabytes

5 PB = 5,000,000 GB

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Suggested Conversions

Reference:NIST / IEC (IEC 80000-13 Binary Prefixes)

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Petabyte to Gigabyte Conversion Table

Table showing various petabyte measurements converted to gigabytes. Click any preset value or arrow to load it into the converter.

Petabytes (PB)	Gigabytes (GB)
0.0000001 PB	0.1 GB
0.0000002 PB	0.2 GB
0.0000003 PB	0.3 GB
0.0000004 PB	0.4 GB
0.0000005 PB	0.5 GB
0.0000006 PB	0.6 GB
0.0000007 PB	0.7 GB
0.0000008 PB	0.8 GB
0.0000009 PB	0.9 GB
0.00000001 PB	0.01 GB

How to Convert Petabytes to Gigabytes

To convert petabytes to gigabytes, multiply the data size by the following conversion ratio: 1,000,000 gigabytes/petabyte.

Since one petabyte is equal to 1,000,000 gigabytes, you can use this simple formula to convert:

gigabytes = petabytes × 1,000,000

The data size in gigabytes is equal to the data size in petabytes multiplied by 1,000,000.

For example, here's how to convert 5 petabytes to gigabytes using the formula above.

gigabytes = (5 PB × 1,000,000) = 5,000,000 GB

How Many Gigabytes Are in a Petabyte?

There are 1,000,000 gigabytes in a petabyte, which is why we use this value in the formula above.

1 PB = 1,000,000 GB|1 GB = 0.000001 PB

Our petabyte to gigabyte calculator automatically converts your data size measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Petabytes and gigabytes are both units used to measure data size. Keep reading to learn more about each unit.

What Is a Petabyte?

A petabyte is a unit of data size equal to 1e+15 bytes (B), the base unit for data size. SI decimal standard: 10¹⁵ bytes (1,000 TB). [1]

The petabyte is classified as a metric and SI-compatible unit of data size. Petabytes can be abbreviated as PB; for example, 1 petabyte can be written as 1 PB.

In the metric system, "peta" is the standard SI prefix for quadrillions, or 10¹⁵. This makes the petabyte (PB) a convenient decimal multiple of the byte (B).

In practice, petabytes (PB) are widely used across large-scale industrial, bulk, and macro-level data size specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about petabytes in our Digital Storage Converter.

What Is a Gigabyte?

A gigabyte is a unit of data size equal to 1,000,000,000 bytes (B), the base unit for data size. SI decimal standard: 1,000,000,000 bytes. [2]

The gigabyte is classified as a metric and SI-compatible unit of data size. Gigabytes can be abbreviated as GB; for example, 1 gigabyte can be written as 1 GB.

In the metric system, "giga" is the standard SI prefix for billions, or 10⁹. This makes the gigabyte (GB) a convenient decimal multiple of the byte (B).

In practice, gigabytes (GB) are widely used across large-scale industrial, bulk, and macro-level data size specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about gigabytes in our Digital Storage Converter.

When converting data size between petabytes (PB) and gigabytes (GB), keep full floating-point precision (1 PB = 1,000,000 GB; 1 GB = 0.000001 PB) during intermediate calculations and round only the final gigabyte figure to match your instrument tolerance.

More Petabyte & Gigabyte Conversions

Need to calculate in the opposite direction? Use our gigabytes to petabytes calculator to switch your starting unit immediately. You can also explore related tools such as converting gigabytes to petabytes, converting megabytes to gigabytes, or converting terabytes to gigabytes.

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Frequently Asked Questions

There are 1,000,000 gigabytes (GB) in 1 petabyte (PB). Conversely, 1 gigabyte (GB) is equal to 0.000001 petabytes (PB).

Digital Storage Converter

Quick Info

Direct Factor: 1 petabyte (decimal) (PB) equals 1,000,000 gigabytes (GB).
Inverse Factor: 1 gigabyte (decimal) (GB) equals 0.000001 petabytes (PB).
Formula: gigabytes = petabytes × 1,000,000.
Standard Note: Decimal SI (Base-10) vs. Binary IEC (Base-2) & Bits vs. Bytes: Networking speeds and storage drive manufacturers use SI decimal prefixes (1 kB = 1,000 bytes, 1 MB = 1,000,000 bytes, 1 GB = 10⁹ bytes), whereas operating systems and RAM often report binary IEC prefixes (1 KiB = 1,024 bytes, 1 MiB = 1,048,576 bytes, 1 GiB = 1,073,741,824 bytes). Also note that lowercase 'b' denotes bits while uppercase 'B' denotes Bytes (1 Byte = 8 bits).

Units Comparison

Petabyte (Decimal) (PB)

SI decimal standard: 10¹⁵ bytes (1,000 TB).

Gigabyte (Decimal) (GB)

SI decimal standard: 1,000,000,000 bytes.

Byte (B)

8 binary bits.

References

[1]NIST / IEC · IEC 80000-13 Binary Prefixes
Source
[2]BIPM · SI Decimal Prefixes (k, M, G, T, P)
Source
[3]NIST CUU · SI Prefixes & Decimal Multiples
Source

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References

NIST · BIPM · ISO

[1]
NIST / IEC (IEC 80000-13 Binary Prefixes)·Digital Storage Metrology Standard — Petabytes (PB) to Gigabytes (GB)
NIST / IEC Standard
[2]
BIPM (SI Decimal Prefixes (k, M, G, T, P))·Unit Specifications: Petabyte (Decimal) (PB) & Gigabyte (Decimal) (GB)
BIPM Specification
[3]
NIST CUU (SI Prefixes & Decimal Multiples)·Conversion Factors & Mathematical Basis (PB to GB)
NIST CUU Reference

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