"If you don't mind..." in Japanese?
How would you say something like "If you don't mind, なんさいですか。"

That's how I would ask in English because sometimes I feel it's too rude to directly ask someone their age when they're older.
Would this be okay: "もし大丈夫だったら、なんさいですか。” ?

Question

"If you don't mind..." in Japanese?
How would you say something like "If you don't mind, なんさいですか。"

That's how I would ask in English because sometimes I feel it's too rude to directly ask someone their age when they're older.
Would this be okay: "もし大丈夫だったら、なんさいですか。” ?

Answer

もしよければ、年齢を聞いてもいいですか？
If you don't mind, can I ask your age?

Answer

We say　差しさわりがなければ年齢をおうかがいしてもかまいませんか？
さしさわりがなければ、年齢を教えていただけますか。etc.

It is better to ask if we can ask that person this question or not beforehand in Japanese.