expression
when it comes to ...; speaking of ...; if we're talking about ...
Used to introduce a topic or to respond to a previous statement by focusing on a specific aspect. Often follows a noun or a phrase.
日本の食べ物というと、寿司を思い浮かべる人が多い。
When it comes to Japanese food, many people think of sushi.
「彼は優秀だね」「優秀というと、彼の妹もすごいんだよ」
"He's excellent." "Speaking of excellent, his sister is amazing too."
expression, conjunction
you mean ...?; so that means ...; by ... you mean ...
Used to seek clarification or to confirm the meaning of what was just said. Can appear at the beginning of a sentence.
「明日は休みだよ」「というと、仕事は休みなの？」
"Tomorrow is a day off." "You mean we don't have work?"
というと、彼は来ないってこと？
So that means he's not coming?
expression
whenever ...; if it's ... then (without fail)
Indicates that whenever a certain condition is met, a particular result inevitably follows. Often used with habitual or characteristic outcomes.
彼は暇というと、すぐにゲームを始める。
Whenever he has free time, he immediately starts playing games.
この店は新商品が出るというと、長い行列ができる。
Whenever this shop releases a new product, long lines form.