What Is a Yottabyte?

A Yottabyte, We Will Define

A yottabyte (technically pronounced “yadda-bite,” not “yoda-bite,” but it’s the eve of May the Fourth and we couldn’t pass up a “Star Wars” reference) is a phenomenally huge number of bytes. As a refresher, a byte is a unit of digital storage made up of eight bits (short for binary digit which are either a one or a zero).

The prefix “yotta” is the largest unit recognized by the International System of Units (SI). It denotes a factor of 1024 or 1,000,000,000,000,000,000,000,000 (that’s 24 zeroes in case your eyes are crossing) or one septillion (not reptilian).

To compare, the last time we defined a big number, we looked at an exabyte, which is only a measly 1018.

Put it in other units of measure, one yottabyte =

  • one thousand (1,000) zettabytes
  • one million (1,000,000) exabytes
  • one billion (1,000,000,000) petabytes
  • one trillion (1,000,000,000,000) terabytes
  • one quadrillion (1,000,000,000,000,000) gigabytes
  • one quintillion (1,000,000,000,000,000,000) megabytes
  • one sextillion (1,000,000,000,000,000,000,000) kilobytes
  • one septillion (1,000,000,000,000,000,000,000,000) bytes

Feel the force of the zeroes, you will!

To give you some examples of what these fantastic figures actually look like, we put together this infographic with some approximations to bring a yottabyte into perspective. Keep in mind, right now, nothing is actually measured in yottabyte scale—it’s a theoretical number that’s just sitting around waiting for the future of supercomputing to be put to good use.


How Big is a Yottabyte

If you want to share this infographic on your site, copy the code below and paste into a Custom HTML block. 

<div><div><strong>What is a Yottabyte</strong></div><a href="https://www.backblaze.com/blog/what-is-a-yottabyte/"><img src="https://www.backblaze.com/blog/wp-content/uploads/2022/05/compressed-v2_Backblaze_How-Big-is-a-Yottabyte_IG-copy-1-scaled.jpg" border="0" alt="how big is a yottabyte infographic" title="how big is a yottabyte infographic" /></a></div>

”Judge Me by My Size, Do You?”

“And, well, you should not,” in the words of Yoda. Now that you know what a yottabyte looks like, let’s look at how much data storage Backblaze has under management.

Way back in 2010, we passed 10 petabytes of cloud backup data under management. It was a big deal at the time and we celebrated it on our blog. We made an infographic about it and thus began our infographic journey into the world of big numbers.

10 Petabytes Visualized

In 2012, we passed 75 petabytes and visualized the data as an iTunes gift card, as one does in 2012…

iTunes Card

Just five months after that, we passed 100 petabytes and compared it to Mt. Shasta…

Mt. Shasta

We were really on a roll—150 petabytes in early 2015, 200 before the end of that year. The storage was accelerating, and we couldn’t mark every milestone with a cool visual. That was, until we hit one exabyte in 2020.

How Big is an Exabyte?

And it hasn’t slowed down since then. Today, we have over two exabytes of data storage under management. We’re nowhere near a yottabyte yet, but like Yoda says, “Patience, you must have.”

Two exabytes today. A yottabyte tomorrow. Maybe? Someday? Either way, you know we’ll be there with a handy infographic whenever the day comes.


About Yev

Yev Pusin is the senior director of Marketing and sometimes Marketing chief of staff at Backblaze, which he joined in 2011. Yev has a degree in business and communications from the University of Iowa, where he developed an alliteration affinity. Yev enjoys writing in an amusing way about the "why" of things and how decisions are made, so that readers can learn and be entertained all at once. Follow Yev on: Twitter: @YevP | LinkedIn: Yev Pusin