how old are you en arabe

The phrase "How old are you?" in Arabic can be translated as:

• كم عمرك؟
  Pronounced: Kam ‘umruka? (to a male)
  Or
  كم عمركِ؟
  Pronounced: Kam ‘umruki? (to a female)

This is the most common and simple way to ask someone's age in Arabic.