1 Tb = 0.000125 PB
Terabits to Petabytes Converter: Tb to PB Conversion Calculator
To convert terabits to petabytes (Tb to PB), enter your terabit value below and click the Convert button. Your petabyte result also updates automatically as you type, using SI decimal prefixes (1,000 per step) and converting between bits and bytes. This free Tb to PB converter and conversion calculator also works vice versa: use Swap units to convert the other way, or Reset to start over. Also see: Bits to Yobibits.
Terabit (Tb)
A terabit is 1,000 gigabits or 10^12 bits. Used for backbone network and data center connections.
View the terabit data unit pagePetabyte (PB)
A petabyte is 1,000 terabytes or 1,000,000,000,000,000 bytes. Used for large-scale enterprise and cloud storage.
View the petabyte data unit pageHow to Convert Terabits to Petabytes
To convert terabits to petabytes, divide by 8 then adjust for scale. Since 1 byte = 8 bits, this conversion translates bit-based measurements to the byte-based units used for storage capacity.
Tb measures data in bits—commonly used for memory addressing and low-level data specifications.
PB measures data in bytes—the standard unit for file sizes, storage capacity, and what you see in file explorers. Related: Terabits to Zettabytes.
1 Tb = 0.000125 PB (using SI decimal standard) — or equivalently, 1 PB = 8,000Tb.
Tb to PB conversion rate: 1 terabit equals 0.000125petabytes — the standard terabit to petabyte data storage conversion used by this calculator.
Quick Facts: Tb to PB Storage Conversion
- Conversion factor: 1 Tb = 0.000125 PB (SI decimal)
- Reverse factor: 1 PB = 8,000 Tb
- Source unit type: SI decimal bit storage unit
- Target unit type: SI decimal storage unit
- Category: data storage converter, digital capacity calculator
Steps to Convert Terabit to Petabyte
- Enter your terabit value (Tb) into the terabit to petabyte converter above.
- The equivalent petabytes (PB) value updates instantly using the Tb to PB conversion factor; click the Convert button to recalculate it manually.
- Use the swap control to reverse the calculation and convert petabytes back into terabits.
Tb to PB Conversion Formula
Here's the exact Tb to PB formula in copy-paste-ready form — multiply by 0.000125 to go from terabits to petabytes, or by 8,000 to reverse it — followed by a quick-reference chart of the same conversion.
// Convert Tb to PB
PB = Tb × 0.000125
// Reverse: Convert PB to Tb
Tb = PB × 8,000
Terabit to Petabyte Conversion Examples
100 Tb = 0.0125 PB
256 Tb = 0.032 PB
500 Tb = 0.0625 PB
1,000 Tb = 0.125 PB
2,048 Tb = 0.256 PB
What Is a Terabit (Tb)? Definition and Uses
A terabit is 1,000 gigabits or 10^12 bits. Used for backbone network and data center connections.
The terabit is a SI decimal bit unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard.
Common uses: Data center interconnects, backbone networks, high-capacity optical links See also: Terabits to Yottabytes.
1 Tb = 1 × 10¹² bits = 125 × 10⁹ bytes.
The terabit can be abbreviated as Tb; for example, 1 terabit can be written as 1 Tb.
Terabit Storage Unit at a Glance
| Unit type | SI decimal bit |
|---|---|
| Base / standard | Base 1,000 — SI (International System of Units) |
| Symbol | Tb |
| Common uses | Data center interconnects, backbone networks, high-capacity optical links |
What Is a Petabyte (PB)? Definition and Uses
A petabyte is 1,000 terabytes or 1,000,000,000,000,000 bytes. Used for large-scale enterprise and cloud storage.
The petabyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard.
Common uses: Data centers, cloud storage providers, scientific research, enterprise archives
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.
Petabyte Storage Unit at a Glance
| Unit type | SI decimal |
|---|---|
| Base / standard | Base 1,000 — SI (International System of Units) |
| Symbol | PB |
| Common uses | Data centers, cloud storage providers, scientific research, enterprise archives |
Terabit to Petabyte Conversion Table
The table below shows 100 terabit measurements converted to petabytes — scroll within the table to see the full range.
| Terabits | Petabytes |
|---|---|
| 1 Tb | 0.000125 PB |
| 13 Tb | 0.001625 PB |
| 26 Tb | 0.00325 PB |
| 39 Tb | 0.004875 PB |
| 52 Tb | 0.0065 PB |
| 65 Tb | 0.008125 PB |
| 78 Tb | 0.00975 PB |
| 91 Tb | 0.011375 PB |
| 104 Tb | 0.013 PB |
| 117 Tb | 0.014625 PB |
| 130 Tb | 0.01625 PB |
| 143 Tb | 0.017875 PB |
| 156 Tb | 0.0195 PB |
| 169 Tb | 0.021125 PB |
| 182 Tb | 0.02275 PB |
| 195 Tb | 0.024375 PB |
| 208 Tb | 0.026 PB |
| 221 Tb | 0.027625 PB |
| 234 Tb | 0.02925 PB |
| 247 Tb | 0.030875 PB |
| 260 Tb | 0.0325 PB |
| 273 Tb | 0.034125 PB |
| 286 Tb | 0.03575 PB |
| 299 Tb | 0.037375 PB |
| 312 Tb | 0.039 PB |
| 325 Tb | 0.040625 PB |
| 338 Tb | 0.04225 PB |
| 351 Tb | 0.043875 PB |
| 364 Tb | 0.0455 PB |
| 377 Tb | 0.047125 PB |
| 390 Tb | 0.04875 PB |
| 403 Tb | 0.050375 PB |
| 416 Tb | 0.052 PB |
| 429 Tb | 0.053625 PB |
| 442 Tb | 0.05525 PB |
| 455 Tb | 0.056875 PB |
| 468 Tb | 0.0585 PB |
| 481 Tb | 0.060125 PB |
| 494 Tb | 0.06175 PB |
| 507 Tb | 0.063375 PB |
| 520 Tb | 0.065 PB |
| 533 Tb | 0.066625 PB |
| 546 Tb | 0.06825 PB |
| 559 Tb | 0.069875 PB |
| 572 Tb | 0.0715 PB |
| 585 Tb | 0.073125 PB |
| 598 Tb | 0.07475 PB |
| 611 Tb | 0.076375 PB |
| 624 Tb | 0.078 PB |
| 637 Tb | 0.079625 PB |
| 650 Tb | 0.08125 PB |
| 663 Tb | 0.082875 PB |
| 676 Tb | 0.0845 PB |
| 689 Tb | 0.086125 PB |
| 702 Tb | 0.08775 PB |
| 715 Tb | 0.089375 PB |
| 728 Tb | 0.091 PB |
| 741 Tb | 0.092625 PB |
| 754 Tb | 0.09425 PB |
| 767 Tb | 0.095875 PB |
| 780 Tb | 0.0975 PB |
| 793 Tb | 0.099125 PB |
| 806 Tb | 0.10075 PB |
| 819 Tb | 0.102375 PB |
| 832 Tb | 0.104 PB |
| 845 Tb | 0.105625 PB |
| 858 Tb | 0.10725 PB |
| 871 Tb | 0.108875 PB |
| 884 Tb | 0.1105 PB |
| 897 Tb | 0.112125 PB |
| 910 Tb | 0.11375 PB |
| 923 Tb | 0.115375 PB |
| 936 Tb | 0.117 PB |
| 949 Tb | 0.118625 PB |
| 962 Tb | 0.12025 PB |
| 975 Tb | 0.121875 PB |
| 988 Tb | 0.1235 PB |
| 1,001 Tb | 0.125125 PB |
| 1,014 Tb | 0.12675 PB |
| 1,027 Tb | 0.128375 PB |
| 1,040 Tb | 0.13 PB |
| 1,053 Tb | 0.131625 PB |
| 1,066 Tb | 0.13325 PB |
| 1,079 Tb | 0.134875 PB |
| 1,092 Tb | 0.1365 PB |
| 1,105 Tb | 0.138125 PB |
| 1,118 Tb | 0.13975 PB |
| 1,131 Tb | 0.141375 PB |
| 1,144 Tb | 0.143 PB |
| 1,157 Tb | 0.144625 PB |
| 1,170 Tb | 0.14625 PB |
| 1,183 Tb | 0.147875 PB |
| 1,196 Tb | 0.1495 PB |
| 1,209 Tb | 0.151125 PB |
| 1,222 Tb | 0.15275 PB |
| 1,235 Tb | 0.154375 PB |
| 1,248 Tb | 0.156 PB |
| 1,261 Tb | 0.157625 PB |
| 1,274 Tb | 0.15925 PB |
| 1,287 Tb | 0.160875 PB |
SI Decimal Prefixes: How Tb to PB Is Calculated
Both terabits and petabytes are SI decimal units, so every prefix step is exactly 1,000 and 1 Tb = 0.000125 PB. This is the convention behind advertised link speeds and drive specifications. Because one unit counts bits and the other bytes, the factor also includes a factor of 8.
| Unit | Standard | Prefix step | 1 unit equals |
|---|---|---|---|
| Terabit (Tb) | SI decimal | 1,000 | 1,000,000,000,000 bits |
| Petabyte (PB) | SI decimal | 1,000 | 8.000 × 10¹⁵ bits |
Want the binary (IEC) version? See Tib to PiB.
FAQs: Terabit to Petabyte Conversion
6 questions Quick answers on converting terabits to petabytes, using the same factors as the converter above.
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How many petabytes are in 1 terabit?
1 Tb = 0.000125 PB
1 Terabit (Tb) equals 0.000125 Petabytes using the SI decimal standard.
-
How many terabits are in 1 petabyte?
1 PB = 8,000 Tb
1 Petabyte (PB) equals 8,000 Terabits.
-
How do I convert terabits to petabytes?
Tb × 0.000125 = PB
Multiply the terabit value by 0.000125 to get petabytes. For example, 10 Tb = 0.00125 PB. To convert back (vice versa), multiply petabytes by 8,000.
-
Is a terabit bigger than a petabyte?
PB is 8,000× larger than Tb
No. 1 Tb = 0.000125 PB, so the petabyte is larger — 1 PB = 8,000 Tb.
-
Does Tb to PB use SI decimal or binary prefixes?
Base 10 (SI): 1,000 per step
Both terabits and petabytes are SI decimal (base 10) units, so each prefix step is exactly 1,000, giving 1 Tb = 0.000125 PB. Because one unit counts bits and the other bytes, the factor also includes a factor of 8. The binary (IEC) versions count in base 2 steps of 1,024 instead.
-
What is Terabit (Tb) commonly used for?
Common uses of the terabit (Tb) include: Data center interconnects, backbone networks, high-capacity optical links.
Need another value? Use the Tb to PB converter or convert PB to Tb.