French Phrase for Asking Someone's Age: "Quel âge as-tu ?"

"Quel âge as-tu ?" means "How old are you?" and is a basic way to ask someone's age in French. It's a casual form used with people you know well; for strangers or elders, "Quel âge avez-vous ?" (the polite form) is used instead. Typical replies use "J'ai ... ans".