Updated: 12/31/2022 by Computer Hope

Yotta (Y) is a prefix used with the metric system that is 1024, or 1,000,000,000,000,000,000,000,000 (septillion). A good example of where this prefix is used with computers is with a YB (yottabyte). The yotta prefix was added as an SI (Systems of Units) in 1991.

What prefix is before a yotta?

A zetta is the prefix used before a yotta.

What comes after a yotta?

As of 2022, a yotta is the largest SI unit and there is no prefix that comes after a yotta.

Measurements, SI, Y, Yottabyte