Zettabytes (ZB) to Yottabytes (YB) Converter
Convert zettabytes to yottabytes.
1 ZB = 0.001 YB
How to convert ZB to YB
File sizes here use the decimal (SI) system, the same one drive makers and network providers use. In that system 1 Zettabyte is 1021 bytes and 1 Yottabyte is 1024 bytes. Divide one by the other and you get the ratio between the two units: 1021 ÷ 1024 = 10−3.
Zettabyte is the smaller unit, so you divide. One ZB is only 0.001 of a YB, which means the decimal point moves 3 places to the left.
These two sit side by side on the ladder (B → KB → MB → GB → TB → PB → EB → ZB → YB → RB → QB), so there is nothing to work out beyond remembering that every step is a factor of 1,000.
The formula
YB = ZB ÷ 1,0001 ZB = 0.001 YB
Worked example 1: Converting 1 ZB
1 ZB ÷ 1,000 = 0.001 YBThe decimal point moves 3 places to the left.
Analysts quote the total data created worldwide in a year in zettabytes.
Worked example 2: Converting 0.5 ZB
0.5 ZB ÷ 1,000 = 0.0005 YBThe decimal point moves 3 places to the left.
Worked example 3: Converting 12.75 ZB
12.75 ZB ÷ 1,000 = 0.01275 YBThe decimal point moves 3 places to the left.
Need the other direction? Open the YB to ZB converter.
ZB to YB examples
Analysts quote the total data created worldwide in a year in zettabytes. In yottabytes that is 0.001 YB.
| ZB | YB |
|---|---|
| 1 ZB | 0.001 YB |
| 2.5 ZB | 0.0025 YB |
| 10 ZB | 0.01 YB |
| 50 ZB | 0.05 YB |
| 100 ZB | 0.1 YB |
| 500 ZB | 0.5 YB |
| 1,000 ZB | 1 YB |
Where ZB to YB comes up
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.
A yottabyte is 1,000 zettabytes, which is 1024 bytes. Yottabytes are mostly a textbook and forecast unit. You meet them in articles about how large data totals could grow.
Going from zettabytes up to yottabytes 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.
ZB to YB FAQ
How many yottabytes are in 1 zettabyte?
One zettabyte is 0.001 of a yottabyte. It takes 1,000 zettabytes to make 1 yottabyte.
Is ZB to YB 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 YB the two systems differ by about 20.9%.
How do I convert YB to ZB?
Go the other way: multiply by 1,000, which moves the decimal point 3 places to the right. The swap button on the converter does it for you.