Zettabytes (ZB) to Quettabytes (QB) Converter
Convert zettabytes to quettabytes.
1 ZB = 0.000000001 QB
How to convert ZB to QB
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 Quettabyte is 1030 bytes. Divide one by the other and you get the ratio between the two units: 1021 ÷ 1030 = 10−9.
Zettabyte is the smaller unit, so you divide. One ZB is only 1 × 10−9 of a QB, which means the decimal point moves 9 places to the left.
On the ladder (B → KB → MB → GB → TB → PB → EB → ZB → YB → RB → QB) these two are 3 steps apart. Every step is a factor of 1,000, so 3 steps means 1,000 multiplied by itself 3 times, which is 109.
The formula
QB = ZB ÷ 1,000,000,0001 ZB = 1 × 10−9 QB
Worked example 1: Converting 1 ZB
1 ZB ÷ 1,000,000,000 = 1 × 10−9 QBThe decimal point moves 9 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 ÷ 1,000,000,000 = 5 × 10−10 QBThe decimal point moves 9 places to the left.
Worked example 3: Converting 12.75 ZB
12.75 ZB ÷ 1,000,000,000 = 1.275 × 10−8 QBThe decimal point moves 9 places to the left.
Need the other direction? Open the QB to ZB converter.
ZB to QB examples
Analysts quote the total data created worldwide in a year in zettabytes. In quettabytes that is 1 × 10−9 QB.
| ZB | QB |
|---|---|
| 1 ZB | 1 × 10−9 QB |
| 2.5 ZB | 2.5 × 10−9 QB |
| 10 ZB | 1 × 10−8 QB |
| 50 ZB | 5 × 10−8 QB |
| 100 ZB | 1 × 10−7 QB |
| 500 ZB | 5 × 10−7 QB |
| 1,000 ZB | 0.000001 QB |
Where ZB to QB 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.
Quetta- is the SI prefix for 1030, also adopted in 2022, so a quettabyte is 1,000 ronnabytes. Quettabytes are the top of the official SI ladder. They turn up in unit tables and in explanations of the newest prefixes.
Going from zettabytes up to quettabytes 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 QB FAQ
How many quettabytes are in 1 zettabyte?
One zettabyte is 1 × 10−9 of a quettabyte. It takes 1,000,000,000 zettabytes to make 1 quettabyte.
Is ZB to QB 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 QB the gap is wider still.
How do I convert QB to ZB?
Go the other way: multiply by 1,000,000,000, which moves the decimal point 9 places to the right. The swap button on the converter does it for you.