Petabytes (PB) to Zettabytes (ZB) Converter
Convert petabytes to zettabytes.
1 PB = 0.000001 ZB
How to convert PB to ZB
File sizes here use the decimal (SI) system, the same one drive makers and network providers use. In that system 1 Petabyte is 1015 bytes and 1 Zettabyte is 1021 bytes. Divide one by the other and you get the ratio between the two units: 1015 ÷ 1021 = 10−6.
Petabyte is the smaller unit, so you divide. One PB is only 0.000001 of a ZB, which means the decimal point moves 6 places to the left.
On the ladder (B → KB → MB → GB → TB → PB → EB → ZB → YB → RB → QB) these two are 2 steps apart. Every step is a factor of 1,000, so 2 steps means 1,000 multiplied by itself 2 times, which is 106.
The formula
ZB = PB ÷ 1,000,0001 PB = 0.000001 ZB
Worked example 1: Converting 2 PB
2 PB ÷ 1,000,000 = 0.000002 ZBThe decimal point moves 6 places to the left.
2 PB is the kind of space a large storage cluster in a data centre can hold.
Worked example 2: Converting 0.5 PB
0.5 PB ÷ 1,000,000 = 5 × 10−7 ZBThe decimal point moves 6 places to the left.
Worked example 3: Converting 12.75 PB
12.75 PB ÷ 1,000,000 = 0.00001275 ZBThe decimal point moves 6 places to the left.
Need the other direction? Open the ZB to PB converter.
PB to ZB examples
2 PB is the kind of space a large storage cluster in a data centre can hold. In zettabytes that is 0.000002 ZB.
| PB | ZB |
|---|---|
| 1 PB | 0.000001 ZB |
| 2.5 PB | 0.0000025 ZB |
| 10 PB | 0.00001 ZB |
| 50 PB | 0.00005 ZB |
| 100 PB | 0.0001 ZB |
| 500 PB | 0.0005 ZB |
| 1,000 PB | 0.001 ZB |
Where PB to ZB comes up
A petabyte is 1,000 terabytes, or a million gigabytes. Petabytes belong to data centres, research archives, big analytics warehouses and the storage side of large cloud services.
A zettabyte is 1,000 exabytes, or a trillion gigabytes. Zettabytes appear in market reports and forecasts about how much data the world creates, copies and stores each year.
Going from petabytes up to zettabytes always gives a smaller number, because you are counting in bigger chunks. People do it to make a long number readable, or to compare a file with the size of a drive or a plan.
PB to ZB FAQ
How many zettabytes are in 1 petabyte?
One petabyte is 0.000001 of a zettabyte. It takes 1,000,000 petabytes to make 1 zettabyte.
Is PB to ZB decimal or binary?
This page is decimal (SI), where 1 KB = 1,000 B. Operating systems often count in powers of 1,024 and still print KB, MB or GB, when they really mean KiB, MiB and GiB. At ZB the two systems differ by about 18.1%.
How do I convert ZB to PB?
Go the other way: multiply by 1,000,000, which moves the decimal point 6 places to the right. The swap button on the converter does it for you.