How do you say I have a chair in French?

There are a couple of ways to say "I have a chair" in French, depending on the context and formality:

Formal:

* J'ai une chaise. (This is the most common and literal translation)

Informal:

* J'ai une chaise. (This is also acceptable in informal settings)

* Y a une chaise chez moi. (This translates to "There's a chair at my place")

You can also use the verb "posséder" which means "to possess":

* Je possède une chaise. (This is a more formal way of saying "I have a chair")

It's important to note that the French language uses articles (like "a" and "an" in English) differently than English. In this case, "une" is the feminine singular form of the indefinite article "a" and is used because "chaise" is a feminine noun.