Terabyte to Pebibyte Converter
Convert terabytes to pebibytes with our free online data storage converter.
Quick Answer
1 Terabyte = 0.000888 pebibytes
Formula: Terabyte × conversion factor = Pebibyte
Use the calculator below for instant, accurate conversions.
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All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.
Terabyte to Pebibyte Calculator
How to Use the Terabyte to Pebibyte Calculator:
- Enter the value you want to convert in the 'From' field (Terabyte).
- The converted value in Pebibyte will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Data Storage category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Terabyte to Pebibyte: Step-by-Step Guide
Converting Terabyte to Pebibyte involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Terabyte = 0.000888178 pebibytesExample Calculation:
Convert 10 terabytes: 10 × 0.000888178 = 0.00888178 pebibytes
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
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View all Data Storage conversions →What is a Terabyte and a Pebibyte?
A terabyte (TB) is a multiple of the byte unit for digital information storage. The prefix tera- (symbol T) is defined in the International System of Units (SI) as a multiplier of 1012 (1 trillion, or 1 followed by 12 zeros). Therefore, 1 terabyte = 1,000,000,000,000 bytes. This is equivalent to 1,000 gigabytes (GB).
A pebibyte (PiB) is a unit of digital information storage equal to 250 bytes, which is exactly 1,125,899,906,842,624 bytes (or 10245 bytes). It uses the binary prefix 'pebi-' established by the International Electrotechnical Commission (IEC). The pebibyte was created to provide an unambiguous measurement for byte multiples based on powers of 2, distinguishing it from the petabyte (PB), which is based on the decimal prefix 'peta-' (1015 or 1,000,000,000,000,000 bytes).
Note: The Terabyte is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Pebibyte belongs to the imperial/US customary system.
History of the Terabyte and Pebibyte
The SI prefix 'tera-' (meaning 1012) was adopted for use in computing as storage capacities reached trillions of bytes. Historically, the term 'terabyte' was often used ambiguously to refer to either 1012 bytes (the strict SI definition) or 240 bytes (1,099,511,627,776 bytes), which is the power of 2 closest to a trillion. This ambiguity, particularly noticeable in how operating systems reported disk sizes versus how manufacturers advertised them, led the International Electrotechnical Commission (IEC) to introduce the distinct binary prefix 'tebi-' (Ti) for 240. Thus, tebibyte (TiB) specifically denotes 240 bytes, while terabyte (TB) formally refers to 1012 bytes.
The prefix 'pebi-' (representing 250) was defined by the IEC in 1998 alongside other binary prefixes (kibi-, mebi-, gibi-, tebi-, exbi-). Before this standard, the SI prefix 'peta-' (P) was ambiguously used to represent both 1,000,000,000,000,000 (1015, as per its SI definition) and 1,125,899,906,842,624 (250) in computing contexts, especially for very large data volumes. This led to significant confusion when comparing storage capacities advertised by manufacturers (often using decimal prefixes) and those reported by operating systems or used in technical specifications (often using binary interpretations). The introduction of the pebibyte (PiB) aimed to resolve this ambiguity by providing a specific term for 250 bytes.
Common Uses and Applications: terabytes vs pebibytes
Explore the typical applications for both Terabyte (imperial/US) and Pebibyte (imperial/US) to understand their common contexts.
Common Uses for terabytes
Terabytes are widely used to measure large amounts of digital data storage capacity:
- Specifying the capacity of consumer and enterprise hard disk drives (HDDs) and solid-state drives (SSDs).
- Measuring the size of large files, databases, archives, and backups.
- Quantifying the storage space available in cloud storage plans and data centers.
- Describing the amount of data transferred over networks or used in monthly internet data caps.
- Indicating the capacity of personal computers, laptops, external drives, and network-attached storage (NAS) devices.
When to Use pebibytes
Pebibytes are used in contexts dealing with extremely large amounts of data storage where precision based on powers of 2 is necessary:
- Measuring the capacity of very large-scale storage systems, data centers, and cloud storage infrastructure.
- Reporting file system sizes and disk space usage by operating systems for extremely large volumes, especially where IEC standards are followed.
- High-performance computing (HPC), large dataset analysis (Big Data), scientific research, and simulations involving massive data storage requirements.
- Technical specifications for enterprise-level storage hardware and software where exact binary multiples are crucial.
- Archiving and backup systems handling petabyte-scale data.
Additional Unit Information
About Terabyte (TB)
How many bytes are in a terabyte (TB)?
According to the standard SI definition, there are exactly 1,000,000,000,000 bytes (one trillion bytes, or 1012 bytes) in 1 terabyte (TB).
How many gigabytes (GB) are in a terabyte (TB)?
There are 1,000 gigabytes (GB) in 1 terabyte (TB). This follows the SI prefixes: 1 TB = 1012 bytes and 1 GB = 109 bytes. Therefore, 1 TB / 1 GB = 1012 / 109 = 103 = 1,000.
What is the difference between a terabyte (TB) and a tebibyte (TiB)?
- A terabyte (TB) uses the decimal SI prefix 'tera-' and equals 1012 bytes (1,000,000,000,000 bytes). It's commonly used in storage device marketing.
- A tebibyte (TiB) uses the binary IEC prefix 'tebi-' and equals 240 bytes (1,099,511,627,776 bytes). It's often used by operating systems to report storage capacity based on powers of 2. A tebibyte (TiB) is approximately 9.95% larger than a terabyte (TB) (1 TiB ≈ 1.0995 TB).
What is the difference between a terabyte (TB) and a terabit (Tb)?
- A terabyte (TB) measures data storage capacity in bytes and equals 1012 bytes.
- A terabit (Tb) measures data quantity or data transfer speed in bits and equals 1012 bits. Assuming the standard definition of 1 byte = 8 bits, 1 terabyte (TB) is equal to 8 terabits (Tb). Calculation: 1 TB = 1012 bytes = 1012 * 8 bits = 8 * 1012 bits = 8 Tb. Therefore, a terabyte represents 8 times more data storage capacity than the equivalent number of terabits.
Why is TB often used in marketing instead of TiB?
Storage manufacturers typically market drive capacities using the decimal prefix terabyte (TB) because 1012 bytes yields a larger, rounder number compared to the equivalent value expressed using the binary prefix tebibyte (TiB) (which is 240 bytes). For instance, a hard drive containing exactly 1,000,000,000,000 bytes is advertised as 1 TB. If measured in tebibytes, this same physical capacity would be approximately 0.909 TiB (since 1012 / 240 ≈ 0.909). Using TB allows manufacturers to present higher capacity figures, which is advantageous for marketing, even though operating systems might report the capacity using the smaller TiB value.
About Pebibyte (PiB)
How many bytes are in a pebibyte (PiB)?
There are exactly 250 bytes in 1 pebibyte (PiB). This equals 1,125,899,906,842,624 bytes.
How many tebibytes (TiB) are in a pebibyte (PiB)?
There are 1,024 tebibytes (TiB) in 1 pebibyte (PiB). This follows the binary prefix system where 1 PiB = 250 bytes and 1 TiB = 240 bytes, and 250 / 240 = 210 = 1,024.
What is the difference between a pebibyte (PiB) and a petabyte (PB)?
A pebibyte (PiB) represents 250 bytes (1,125,899,906,842,624 bytes), using the IEC binary prefix 'pebi-'. A petabyte (PB) typically represents 1015 bytes (1,000,000,000,000,000 bytes), using the SI decimal prefix 'peta-'. A pebibyte is approximately 12.6% larger than a petabyte (1 PiB ≈ 1.126 PB). Use PiB for precision in binary contexts (like large-scale OS reporting, HPC storage) and PB for decimal contexts (like marketing large storage systems) or when the specific definition is clarified.
What is the difference between a pebibyte (PiB) and a pebibit (Pib)?
A pebibyte (PiB) measures information in bytes, while a pebibit (Pib) measures information in bits. Assuming the standard 1 byte = 8 bits, 1 pebibyte (PiB) is equal to 8 pebibits (Pib). Both use the binary prefix 'pebi-' (250).
Why is PiB used less often than PB in marketing?
Marketing materials for large storage systems often use the decimal prefix (PB, EB) because it results in a larger-looking number for capacity compared to the binary prefix (PiB, EiB) for the same amount of physical storage. For example, 1015 bytes is marketed as 1 PB, while an OS might report a similar capacity using PiB (1 PB is approximately 0.888 PiB). Using decimal units allows manufacturers to advertise higher, rounder numbers, even though technical contexts often rely on binary measurements.
Conversion Table: Terabyte to Pebibyte
| Terabyte (TB) | Pebibyte (PiB) |
|---|---|
| 0.5 | 0 |
| 1 | 0.001 |
| 1.5 | 0.001 |
| 2 | 0.002 |
| 5 | 0.004 |
| 10 | 0.009 |
| 25 | 0.022 |
| 50 | 0.044 |
| 100 | 0.089 |
| 250 | 0.222 |
| 500 | 0.444 |
| 1,000 | 0.888 |
People Also Ask
How do I convert Terabyte to Pebibyte?
To convert Terabyte to Pebibyte, enter the value in Terabyte in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our data storage converter page to convert between other units in this category.
Learn more →What is the conversion factor from Terabyte to Pebibyte?
The conversion factor depends on the specific relationship between Terabyte and Pebibyte. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.
Can I convert Pebibyte back to Terabyte?
Yes! You can easily convert Pebibyte back to Terabyte by using the swap button (⇌) in the calculator above, or by visiting our Pebibyte to Terabyte converter page. You can also explore other data storage conversions on our category page.
Learn more →What are common uses for Terabyte and Pebibyte?
Terabyte and Pebibyte are both standard units used in data storage measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our data storage converter for more conversion options.
For more data storage conversion questions, visit our FAQ page or explore our conversion guides.
Helpful Conversion Guides
Learn more about unit conversion with our comprehensive guides:
📚 How to Convert Units
Step-by-step guide to unit conversion with practical examples.
🔢 Conversion Formulas
Essential formulas for data storage and other conversions.
⚖️ Metric vs Imperial
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⚠️ Common Mistakes
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All Data Storage Conversions
Other Data Storage Units and Conversions
Explore other data storage units and their conversion options:
- Bit (b) • Terabyte to Bit
- Byte (B) • Terabyte to Byte
- Kilobit (kb) • Terabyte to Kilobit
- Kilobyte (KB) • Terabyte to Kilobyte
- Megabit (Mb) • Terabyte to Megabit
- Megabyte (MB) • Terabyte to Megabyte
- Gigabit (Gb) • Terabyte to Gigabit
- Gigabyte (GB) • Terabyte to Gigabyte
- Terabit (Tb) • Terabyte to Terabit
- Petabit (Pb) • Terabyte to Petabit
Verified Against Authority Standards
All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.
International Electrotechnical Commission — Binary prefixes for digital storage (KiB, MiB, GiB)
International Organization for Standardization — International standards for quantities and units
Last verified: December 3, 2025