Gigabytes (GB) to Zettabytes (ZB) Converter
Convert gigabytes to zettabytes.
1 GB = 1e-12 ZB
How to convert GB to ZB
File sizes here use the decimal (SI) system, the same one drive makers and network providers use. In that system 1 Gigabyte is 109 bytes and 1 Zettabyte is 1021 bytes. Divide one by the other and you get the ratio between the two units: 109 ÷ 1021 = 10−12.
Gigabyte is the smaller unit, so you divide. One GB is only 1 × 10−12 of a ZB, which means the decimal point moves 12 places to the left.
On the ladder (B → KB → MB → GB → TB → PB → EB → ZB → YB → RB → QB) these two are 4 steps apart. Every step is a factor of 1,000, so 4 steps means 1,000 multiplied by itself 4 times, which is 1012.
The formula
ZB = GB ÷ 10121 GB = 1 × 10−12 ZB1012 means 1 followed by 12 zeros
Worked example 1: Converting 4.7 GB
4.7 GB ÷ 1012 = 4.7 × 10−12 ZBThe decimal point moves 12 places to the left.
4.7 GB is the capacity of a single-layer DVD.
Worked example 2: Converting 0.5 GB
0.5 GB ÷ 1012 = 5 × 10−13 ZBThe decimal point moves 12 places to the left.
Worked example 3: Converting 12.75 GB
12.75 GB ÷ 1012 = 1.275 × 10−11 ZBThe decimal point moves 12 places to the left.
Need the other direction? Open the ZB to GB converter.
GB to ZB examples
4.7 GB is the capacity of a single-layer DVD. In zettabytes that is 4.7 × 10−12 ZB.
| GB | ZB |
|---|---|
| 1 GB | 1 × 10−12 ZB |
| 2.5 GB | 2.5 × 10−12 ZB |
| 10 GB | 1 × 10−11 ZB |
| 50 GB | 5 × 10−11 ZB |
| 100 GB | 1 × 10−10 ZB |
| 500 GB | 5 × 10−10 ZB |
| 1,000 GB | 1 × 10−9 ZB |
Where GB to ZB comes up
A gigabyte is 1,000 megabytes, about 250 photos at 4 MB each. Gigabytes are the language of phone storage, RAM, mobile data plans, game installs and USB sticks.
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 gigabytes 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.
GB to ZB FAQ
How many zettabytes are in 1 gigabyte?
One gigabyte is 1 × 10−12 of a zettabyte. It takes 1012 gigabytes to make 1 zettabyte.
Is GB 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 GB?
Go the other way: multiply by 1012, which moves the decimal point 12 places to the right. The swap button on the converter does it for you.