What is identified as the largest practical unit used to quantify the entire observable cosmos in a readable form?

Answer

Gigaparsec (Gpc).

The gigaparsec, representing one billion parsecs, is used for the grandest scales, such as mapping the structure and extent of the observable universe.

What is identified as the largest practical unit used to quantify the entire observable cosmos in a readable form?
SpaceastronomyDistancelargestunit