Updated: 12/10/2023 by Computer Hope

Ronna (R) is a prefix used with the metric system that is 1027, or 1,000,000,000,000,000,000,000,000,000 (octillion). The ronna prefix was added as an SI (Systems of Units) in 2022.


Ronna was featured as a top term of 2022.

What is a ronnabyte?

A ronnabyte is 1,000,000,000,000,000,000,000,000,000 (1027) bytes and comes after a yottabyte.

What is smaller than a ronna?

With SI prefixes, yotta is smaller than ronna.

What is larger than a ronna?

With SI prefixes, quetta is larger than ronna.

What is ronna's decimal equivalent?

A ronto (r) is the prefix used for 10-27.

Brontobyte, Hellabyte, Measurements, R, SI, Storage device