何なん歳さいnansaihow many years oldBreakdown of nansai何なんnanwhat〜歳さい〜saiyears of age (counter)Usages of nansaiあなた は 何なん歳さい です か?anata wa nansai desu ka?How old are you?お子こさん は 何なん歳さい です か?okosan wa nansai desu ka?How old is your child?Elon.io is an online learning platformWe have hundreds of Japanese lessons and thousands of exercises.Start learning Japanese nowNihon-shiki romanizationwatasi ha tyuugoku kara kimasitaHepburn romanizationwatashi wa chuugoku kara kimashita