そういえば

JLPT Level: N2
Meanings

Speaking of which

By the way

Come to think of it

Now that I mention it

That reminds me

Usage

そういえば

そういえば、Sentence

Explanation
そういえば is used when you recall or bring up something related to the current topic, often to transition to a related memory or to introduce a new but relevant remark. It softens the shift in topic and signals that you are remembering something relevant to the ongoing conversation. It is casual and common in spoken Japanese or informal writing; in more formal contexts, you might simply say ところで or そう言えば. Typical usage is at the start of a sentence following a pause or a shift in topic, not as a main point of discussion itself.
そういえば、明日会議があった。
そういえば、あしたかいぎがあった。

By the way, there’s a meeting tomorrow.

そういえば、今日は母の誕生日だった。
そういえば、きょうはははのたんじょうびだった。

Speaking of it, today is my mother's birthday.

そういえば、昼ごはんをまだ食べていない。
そういえば、ひるごはんをまだたべていない。

Come to think of it, I haven’t eaten lunch yet.

そういえば、彼の名前を昨日思い出した。
そういえば、かれのなまえをきのうおもいだした。

That reminds me; I remembered his name yesterday.