Convert Gigabyte to Petabyte (GB → PB)

Converting gigabytes to petabytes is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in gigabytes

   Start with the number of gigabytes (GB) you want to convert.
2. 2
   Multiply by 0.000001

   The conversion factor from GB to PB is 0.000001. Multiply your value by this number.
3. 3
   Read the result in petabytes

   The result is your value in petabytes (PB).

Multiply the value in gigabytes by 0.000001. For the reverse direction, multiply by 1,000,000.

• ✓SI: 1 GB = 1000 MB = 10⁹ B. Binary GiB = 2³⁰ B.
• ✓Hard drives use SI; OS may show binary — discrepancy ~7%.
• ✓Mobile data plans: SI GB.

• ✗Expecting 64 GB drive to hold 64 × 1,073,741,824 B — it's 64 × 10⁹ B (7% less by binary measure).
• ✗Confusing GB with Gb (gigabit, 1/8).
• ✗Mixing GB and GiB without noting the discrepancy.

What is the Gigabyte?

The gigabyte (GB) equals 1,000 megabytes (1,000,000,000 bytes decimal, or 1,073,741,824 bytes as GiB binary) and is the standard unit for smartphone storage, mobile data plans, and modern application sizes. Modern smartphones offer 64–1,024 GB of storage, mobile data plans range from 1 to 50+ GB per month, and operating-system installations typically require 20–80 GB. A 4K video stream consumes 6–8 GB per hour, and a typical app download is 50–500 MB to a few GB. The famous discrepancy between manufacturer-advertised capacity (GB decimal) and operating-system-displayed capacity (GiB binary) means a '1 TB' drive shows about 931 GB to the user. The gigabyte relates to the megabyte (1,000 MB = 1 GB), the terabyte (1,000 GB = 1 TB), the gibibyte (1 GiB = 1.074 GB), and the gigabit (1 GB = 8 Gbit).

• Phone and device storage
• Mobile-data plan allowances
• Memory (RAM) sizes

What is the Petabyte?

The petabyte (PB) equals 1,000 terabytes (10¹⁵ bytes decimal) and rates large data centers, scientific research archives, and major social-media storage systems worldwide. The Large Hadron Collider generates about 30 petabytes of data per year, the U.S. Library of Congress digital collection is in the petabytes range, and major cloud-storage providers manage exabytes (1,000 PB) of data across their fleets. A petabyte could store roughly 250 million MP3 songs or about 13.3 years of HD video. The petabyte relates to the terabyte (1,000 TB = 1 PB), the exabyte (1,000 PB = 1 EB), and the gigabyte (10⁶ GB = 1 PB). Modern hyperscale data centers (Google, Amazon AWS, Microsoft Azure, Meta) store hundreds of petabytes per facility. The next consumer milestone — the petabyte hard drive — is expected within the next decade.

• Cloud-provider storage capacity
• Scientific datasets (CERN, genomics)
• Media archives and streaming libraries