Zettabytes (ZB) to Terabytes (TB) Converter
Convert zettabytes to terabytes.
1 ZB = 1,000,000,000 TB
How to convert ZB to TB
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 Terabyte is 1012 bytes. Divide one by the other and you get the ratio between the two units: 1021 ÷ 1012 = 109.
Zettabyte is the bigger unit, so you multiply. Every ZB holds 1,000,000,000 TB, which means the decimal point moves 9 places to the right.
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
TB = ZB × 1,000,000,0001 ZB = 1,000,000,000 TB
Worked example 1: Converting 1 ZB
1 ZB × 1,000,000,000 = 1,000,000,000 TBThe decimal point moves 9 places to the right.
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 = 500,000,000 TBThe decimal point moves 9 places to the right.
Worked example 3: Converting 12.75 ZB
12.75 ZB × 1,000,000,000 = 12,750,000,000 TBThe decimal point moves 9 places to the right.
Need the other direction? Open the TB to ZB converter.
ZB to TB examples
Analysts quote the total data created worldwide in a year in zettabytes. In terabytes that is 1,000,000,000 TB.
| ZB | TB |
|---|---|
| 1 ZB | 1,000,000,000 TB |
| 2.5 ZB | 2,500,000,000 TB |
| 10 ZB | 10,000,000,000 TB |
| 50 ZB | 50,000,000,000 TB |
| 100 ZB | 100,000,000,000 TB |
| 500 ZB | 500,000,000,000 TB |
| 1,000 ZB | 1,000,000,000,000 TB |
Where ZB to TB 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 terabyte is 1,000 gigabytes, about 250,000 photos at 4 MB each. Terabytes are how consumer SSDs, external drives, home NAS boxes and cloud storage plans are sold.
Going from zettabytes down to terabytes always gives a bigger number, because the unit you land on is smaller. It is the usual direction when a limit or a form asks for a smaller unit than the one you have in mind.
ZB to TB FAQ
How many terabytes are in 1 zettabyte?
There are 1,000,000,000 terabytes in 1 zettabyte, so 1 ZB = 1,000,000,000 TB.
Is ZB to TB 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 TB to ZB?
Go the other way: divide by 1,000,000,000, which moves the decimal point 9 places to the left. The swap button on the converter does it for you.