Japanese Phrase for Asking Someone's Hobby: "趣味は何ですか？"

"趣味は何ですか？" (Shumi wa nan desu ka?) means "What's your hobby?" and is a basic way to ask about someone's hobby in Japanese. It's commonly used in casual conversation among children. Typical replies use "趣味は〜です" (Shumi wa ~ desu), as in "趣味は漫画を読むことです" (Shumi wa manga wo yomu koto desu, My hobby is reading manga).