Terabytes to Petabytes Converter
Convert terabytes to petabytes and understand the difference between decimal (1000) and binary (1024) storage units.
Result
Petabytes (PB)
1 Terabytes (TB) = 0.0009765625 Petabytes (PB)
How to convert Terabytes (TB) to Petabytes (PB)?
Note: Large storage conversions are commonly shown using two standards: decimal (SI) and binary (IEC).
- Decimal (SI): 1 PB = 1000 TB
- Binary (IEC): 1 PiB = 1024 TiB (often shown as “1024 TB per PB” in some tools)
This converter uses a 1024-based calculation as specified by the factor.
Formula (1024-based): Petabytes (PB) = Terabytes (TB) ÷ 1024
Step-by-Step Calculation (1024-based)
- Take the number of Terabytes (TB) you want to convert (e.g., 2500).
- Divide that value by 1024.
- The result is the value in Petabytes (PB). (Example: 2500 ÷ 1024 ≈ 2.4414 PB).
Decimal vs Binary: which one should you use?
Decimal (SI) is common in provider specs, contracts, and marketing labels:
- PB = TB ÷ 1000
Binary (IEC) is common in system-level reporting and some tools:
- PiB = TiB ÷ 1024
Quick tip: If you’re comparing vendor quotes or advertised capacity, use 1000-based. If you’re matching binary calculations, use 1024-based (TiB→PiB).
Why does 1000 TB not equal 1 PB in some tools?
In decimal terms, 1000 TB = 1 PB. But in a 1024-based calculation, 1000 ÷ 1024 ≈ 0.9766 PB. This is a common reason large storage totals can look different across dashboards and billing pages.
Real-world use cases (data centers, backups, analytics)
- Data center capacity planning: Converting TB totals into PB helps forecast growth and procurement needs.
- Backup retention: If backups grow to 1200 TB, converting to PB helps estimate long-term storage tiers.
- Big data workloads: PB-scale datasets are common in analytics and AI—TB↔PB conversions help communicate scale clearly.
How to use this converter?
Common TB to PB Conversions (1024-based)
Quick reference guide using a 1024-based factor.
Note: 1000 vs 1024
TB to PB Conversion Table (1024-based)
| Terabytes (TB) Input | Petabytes (PB) Result |
|---|---|
| 100 TB | 0.0977 PB |
| 250 TB | 0.2441 PB |
| 500 TB | 0.4883 PB |
| 750 TB | 0.7324 PB |
| 1000 TB | 0.9766 PB |
| 1024 TB | 1.0000 PB |
| 2000 TB | 1.9531 PB |
| 5000 TB | 4.8828 PB |
| 10000 TB | 9.7656 PB |
| 20000 TB | 19.5313 PB |
Frequently Asked Questions
How do I convert TB to PB?
If you mean decimal labeling, divide TB by 1000 to get PB. If you’re using a 1024-based calculation, divide by 1024 (more precisely: TiB→PiB).
How many PB is 1000 TB?
In decimal terms, 1000 TB = 1 PB. Using a 1024-based calculation, 1000 ÷ 1024 ≈ 0.9766 PB.
How many PB is 1024 TB?
Using a 1024-based calculation, 1024 TB = 1 PB (more precisely: 1024 TiB = 1 PiB).
Why do some tools use 1000 instead of 1024?
1000 is the decimal (SI) standard used in labeling and many provider specs. 1024 is the binary (IEC) standard (TiB/PiB) often used by operating systems and technical tools.
Is this conversion exact?
It’s exact for the chosen factor. 1024-based conversions are exact in the binary system (TiB→PiB). Decimal labeling commonly uses 1000 (TB→PB).