The Greek Extended block spans U+1F00–U+1FFF, 256 codepoints in Plane 0 (Basic Multilingual Plane). 233 are assigned in Unicode 16.0; the other 23 are reserved for future characters.

All of its characters belong to the Greek script.

By general category: 122 lowercase letters (Ll), 69 uppercase letters (Lu), 27 titlecase letters (Lt), 15 modifier symbols (Sk).

The first 233 arrived in Unicode 1.1 (1993).

229 characters here are precomposed and have canonical decompositions, so NFD splits them into a base letter plus combining marks. See normalization.