Avoir [nombre] ans = To be [number] years old (French Expressions with avoir)

In French, to express how old someone is you use "avoir [nombre] ans".

How to say how old you are in French

Look at these examples expressing age:

Note that to say how old someone is in French, we use avoir + age + ans.

Effectively we say I have fifteen years, not I am fifteen.

ATTENTION:
In French, you cannot omit ans as it wouldn't make sense. J'ai quinze simply means I have fifteen (fifteen what?)

To ask someone's age: