Is It Useable Or Usable? “Usable” is the correct spelling that is more commonly used. “Useable” is a correct variant spelling but is used less often. Both words are acceptable in any English-speaking country, and they’re both used to mean that someone is able to use something.

In terms of American English, “usable” is the most acceptable version. Internationally, both “usable” and “useable” are acceptable spellings of the word. Most dictionaries list “useable” as a variant spelling. You’re more likely to see it in places where British English is dominant.

Usable can also be spelled useable, with an e in the middle: both are correct. The US version simply lists useable as an acceptable variant of usable, and omits the side note. Etymonline shows usable as being derived from the Old French usable.