1.
how old; what age
interrogative asking about someone's age
お子さんは何歳ですか？
How old is your child?
何歳からピアノを習い始めましたか？
At what age did you start learning piano?
この映画は何歳から見られますか？
From what age can you watch this movie?
POLITENESS NOTE:
Asking someone's age directly can be considered impolite in many situations in Japan, especially with adults. It's common to avoid asking or to phrase it more indirectly.
ALTERNATIVE EXPRESSIONS:
- おいくつですか (polite: How old are you?)
- 何歳になりましたか (How old have you turned?)
COMMON PATTERNS:
- 何歳まで (until what age)
- 何歳から (from what age)
- 何歳ぐらい (about how old)