Used to indicate what typically comes to mind or is associated with a given topic.
寿司というと、まず新鮮な魚を思い浮かべます。
When you say 'sushi', the first thing I think of is fresh fish.
日本というと桜や温泉を連想する人が多い。
When it comes to Japan, many people think of cherry blossoms and hot springs.
歴史の授業で『戦国時代』というと、武将や合戦を想像する。
When 'the Sengoku period' is mentioned in history class, I imagine warlords and battles.
Used to confirm or paraphrase what someone said — 'by X do you mean Y?' — and can appear at the start of a sentence.
「高い」というと、具体的にはどのくらいの値段を想定していますか？
When you say 'expensive', specifically what price range do you mean?
来週までにというと、月曜から金曜のどれを指しますか？
If you say 'by next week', do you mean some day from Monday to Friday?
仕事が忙しいというと、残業が多いという意味ですか？
When you say work is busy, do you mean there's a lot of overtime?
Indicates that when a certain situation occurs, a particular result inevitably or habitually follows.
彼の話題になるというと、急に饒舌になる。
Whenever the topic turns to him, he suddenly becomes talkative.
この店は安いというと、いつも行列ができる。
If a shop is cheap, it inevitably has a line.
彼女は音楽がかかるというと、すぐに踊り始める。
Whenever music starts playing, she immediately begins to dance.