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ちなみに、〜 (by the way, ~)

Grammar & Usage

fixed expression, adverbial phrase

neutral, slightly casual

How it works

「ちなみに、〜」 is used to introduce additional information, an aside, or a related but not central point to the current conversation. It functions similarly to 'by the way' or 'incidentally' in English, indicating a shift to secondary information. It often starts a new sentence or clause.

Sample sentences

この本、すごく面白いですよ。ちなみに、著者は私の友人なんです。

This book is really interesting. By the way, the author is a friend of mine.

明日の会議は10時からです。ちなみに、場所はいつもの会議室です。

Tomorrow's meeting starts at 10 AM. Incidentally, the location is our usual meeting room.

昨日、新しいスマホを買いました。ちなみに、これは防水機能が付いています。

Yesterday, I bought a new smartphone. Speaking of which, this one comes with a waterproof feature.

Quick facts

usage_note:While neutral, it's generally used in more conversational or informal writing contexts. For more formal topic changes, 'ところで' (tokorode) is often preferred. 'ちなみに' is specifically for adding a related detail to the existing topic, not for abruptly changing it.

Often used with

ところで (tokorode) - by the way (more for changing topics)

それから (sorekara) - and then, after that

ついでに (tsuide ni) - while you're at it, since you're there

おまけに (omake ni) - what's more, to make matters worse (or better)

余談ですが (yodan desu ga) - it's a digression, but...

Mnemonic

Get an AI-generated memory hook for ちなみに、〜 (by the way, ~) — a vivid scene that locks the word in your brain 🧠

Example

この本、すごく面白いですよ。ちなみに、著者は私の友人なんです。

This book is really interesting. By the way, the author is a friend of mine.

明日の会議は10時からです。ちなみに、場所はいつもの会議室です。

Tomorrow's meeting starts at 10 AM. Incidentally, the location is our usual meeting room.