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PB
Datatechnologyscientific

What is a petabyte?

Datacenter and big-data unit — 1 quadrillion bytes

Definition

The petabyte equals 10¹⁵ bytes. Used for datacenter storage, scientific datasets and video archives. 1 PB could hold the text of 500 billion pages.

Common uses

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

🌍 Real-world scale

Netflix total catalog: many PB. CERN LHC data: 100+ PB/year. YouTube uploads: EB scale now.

Convert from petabytes

7 conversions
Petabyte to Bit1 PB = 8.0000e15 bPetabyte to Byte1 PB = 1.0000e15 BPetabyte to Kilobyte1 PB = 1,000,000,000,000 KBPetabyte to Megabyte1 PB = 1,000,000,000 MBPetabyte to Gigabyte1 PB = 1,000,000 GBPetabyte to Terabyte1 PB = 1,000 TBPetabyte to Megabit per Second1 PB = 8,000,000,000 Mbps

Convert to petabytes

7 conversions
Bit to Petabyte1 b = 1.2500e-16 PBByte to Petabyte1 B = 1.0000e-15 PBKilobyte to Petabyte1 KB = 1.0000e-12 PBMegabyte to Petabyte1 MB = 1.0000e-9 PBGigabyte to Petabyte1 GB = 1.0000e-6 PBTerabyte to Petabyte1 TB = 0.001 PBMegabit per Second to Petabyte1 Mbps = 1.2500e-10 PB

Tips

  • 1 PB = 1000 TB = 10¹⁵ B.
  • PiB uses binary multiples — rare in everyday context.
  • Scale beyond PB: EB (exabyte, 10¹⁸) and ZB (zettabyte, 10²¹).

Common mistakes

  • Using PB when TB suffices — everyday use rarely needs PB.
  • Mixing PB and PiB — 12.6% difference.
  • Ignoring tape vs spinning-disk storage economics at PB scale.

FAQ about the petabyte

What is a petabyte?
The petabyte equals 10¹⁵ bytes. Used for datacenter storage, scientific datasets and video archives. 1 PB could hold the text of 500 billion pages.
Where is the petabyte used?
The petabyte is commonly used for: Cloud-provider storage capacity; Scientific datasets (CERN, genomics); Media archives and streaming libraries.
What is an example of a petabyte in real life?
Netflix total catalog: many PB. CERN LHC data: 100+ PB/year. YouTube uploads: EB scale now.
What category does the petabyte belong to?
The petabyte is a unit of data, part of the 8-unit data category on UnitConv.
How accurate are petabyte conversions?
All conversion factors follow NIST and BIPM international standards to 8 significant figures — the highest practical accuracy.
Explore all 8 data units and their conversions.💾 Data hub →