How many bytes in a quettabyte

p> Data keeps growing: photos, videos, AI models, sensors, and everything in between. To describe truly massive amounts of data, we use special prefixes like kilo, mega, giga, all the way up to yotta. But even yottabytes aren’t the end of the story.

A newer prefix, quetta, was introduced for unimaginably large scales. One quettabyte (QB) is:

1 quettabyte = 10³⁰ bytes

Written out, that’s:

1,000,000,000,000,000,000,000,000,000,000 bytes

That’s a nonillion bytes—far beyond what today’s computers can store. Quettabytes live more in the realm of future technology and thought experiments than in everyday IT. But as our digital world expands, having words for these gigantic numbers helps us imagine what might one day be possible.