How many terabytes are in 1 petabyte?

1 PB equals 1000 TB. This is an exact conversion factor defined by NIST.

How do I convert petabytes to terabytes?

Multiply the value in PB by the conversion factor. For example, 10 PB = 10000 TB. Use our calculator above for instant results.

Is the petabytes to terabytes conversion exact?

Yes, this conversion is mathematically exact based on the international definition of these units (NIST SP 811).

Can I convert petabytes to terabytes offline?

Yes! OmniConvert runs entirely in your browser — no internet connection needed after the page loads. Your data never leaves your device, ensuring complete privacy.

What is the difference between petabytes and terabytes?

Petabytes (PB) and Terabytes (TB) are both units of digital storage but belong to different measurement systems. 1 PB = 1000 TB. Use the converter above to switch between them instantly.

Petabytes to Terabytes (PB → TB) — Free Online Converter

PB → TB Reference Table

PB	TB
0.001 PB	1 TB
0.002 PB	2 TB
0.003 PB	3 TB
0.004 PB	4 TB
0.005 PB	5 TB
0.006 PB	6 TB
0.007 PB	7 TB
0.008 PB	8 TB
0.009 PB	9 TB
0.01 PB	10 TB
0.02 PB	20 TB
0.03 PB	30 TB
0.04 PB	40 TB
0.05 PB	50 TB
0.06 PB	60 TB
0.07 PB	70 TB
0.08 PB	80 TB
0.09 PB	90 TB
0.1 PB	100 TB
0.2 PB	200 TB
0.3 PB	300 TB
0.4 PB	400 TB
0.5 PB	500 TB
0.6 PB	600 TB
0.7 PB	700 TB
0.8 PB	800 TB
0.9 PB	900 TB
1 PB	1000 TB
1.5 PB	1500 TB
2 PB	2000 TB
2.5 PB	2500 TB
3 PB	3000 TB
3.5 PB	3500 TB
4 PB	4000 TB
4.5 PB	4500 TB
5 PB	5000 TB
5.5 PB	5500 TB
6 PB	6000 TB
6.5 PB	6500 TB
7 PB	7000 TB
7.5 PB	7500 TB
8 PB	8000 TB
8.5 PB	8500 TB
9 PB	9000 TB
9.5 PB	9500 TB
10 PB	10000 TB
11 PB	11000 TB
12 PB	12000 TB
13 PB	13000 TB
14 PB	14000 TB
15 PB	15000 TB
16 PB	16000 TB
17 PB	17000 TB
18 PB	18000 TB
19 PB	19000 TB
20 PB	20000 TB
25 PB	25000 TB
30 PB	30000 TB
35 PB	35000 TB
40 PB	40000 TB
45 PB	45000 TB
50 PB	50000 TB
55 PB	55000 TB
60 PB	60000 TB
65 PB	65000 TB
70 PB	70000 TB
75 PB	75000 TB
80 PB	80000 TB
85 PB	85000 TB
90 PB	90000 TB
95 PB	95000 TB
100 PB	100000 TB
120 PB	120000 TB
125 PB	125000 TB
130 PB	130000 TB
140 PB	140000 TB
150 PB	150000 TB
160 PB	160000 TB
175 PB	175000 TB
180 PB	180000 TB
200 PB	200000 TB
225 PB	225000 TB
250 PB	250000 TB
275 PB	275000 TB
300 PB	300000 TB
350 PB	350000 TB
400 PB	400000 TB
450 PB	450000 TB
500 PB	500000 TB
600 PB	600000 TB
700 PB	700000 TB
750 PB	750000 TB
800 PB	800000 TB
900 PB	900000 TB
1000 PB	1000000 TB
1200 PB	1200000 TB
1250 PB	1250000 TB
1500 PB	1500000 TB
1750 PB	1750000 TB
2000 PB	2000000 TB
2500 PB	2500000 TB
3000 PB	3000000 TB
4000 PB	4000000 TB
4500 PB	4500000 TB
5000 PB	5000000 TB
6000 PB	6000000 TB
7000 PB	7000000 TB
7500 PB	7500000 TB
8000 PB	8000000 TB
9000 PB	9000000 TB
10000 PB	10000000 TB
15000 PB	15000000 TB
20000 PB	20000000 TB
25000 PB	25000000 TB
50000 PB	50000000 TB
75000 PB	75000000 TB
100000 PB	100000000 TB

Values based on NIST SP 811 conversion factors

Why Convert Petabytes to Terabytes?

Converting between petabytes (PB) and terabytes (TB) is one of the most common digital storage conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert PB to TB saves time and prevents errors.

Digital storage conversions (PB to TB) are essential for IT professionals, content creators, and everyday computer users. Understanding the difference between bits and bytes is crucial when calculating internet speeds versus file sizes. Photographers and video editors need to convert terabytes and gigabytes to manage backups and estimate cloud storage costs. Confusion often arises between binary (1024) and decimal (1000) prefixes used by hardware manufacturers versus operating systems, leading to apparent 'missing' space on hard drives. Accurate conversion helps in planning server capacity, data transfer times, and device purchases.

How to Convert Petabytes to Terabytes

To convert petabytes to terabytes, use the following formula:

TB = PB × 1000

Example: 1 PB = 1000 TB

For example, 5 PB = 5000 TB, 10 PB = 10000 TB, and 100 PB = 100000 TB. For larger values, 1000 PB = 1000000 TB. Conversely, 1 TB = 0.001 PB. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

Bit vs Byte: 1 Byte = 8 Bits. Internet speed is usually bits (Mb/s), file size is Bytes (MB).
Base 10 vs Base 2: Hard drive makers use Base 10 (1KB=1000B), OS uses Base 2 (1KiB=1024B).
B vs b: MB is Megabyte, Mb is Megabit.

Pro Tips

Storage buying: A 1TB drive usually shows as ~930GB in Windows due to decimal/binary difference.
Data caps: Streaming HD video uses ~3GB/hour.
Backup rule: 3-2-1 rule: 3 copies, 2 media types, 1 offsite.

What is a Petabyte?

10¹⁵ bytes.

Data centers.

What is a Terabyte?

10¹² bytes.

Hard drives.

Petabytes → Terabytes

Petabytes to Terabytes Formula