ちなみに

ちなみに
adverb
by the way; incidentally
1. by the way; incidentally
Used to introduce additional, related information or to segue to a new but connected topic.
ちなみに、(かれ)(わたし)(あに)です。
By the way, he is my older brother.
ちなみに料金(りょうきん)はいくらですか。
Incidentally, how much is the fee?
ちなみに、去年(きょねん)三回(さんかい)()きました。
By the way, I went three times last year.

ちなみに is a conjunctive adverb used to introduce supplementary or related information — similar to "incidentally" or "by the way" in English.

KANJI:
Can be written as (ちな)みに, but hiragana is much more common.

USAGE:

  • Introduces related but tangential information
  • The added information should have some connection to the main topic
  • Typically placed at the beginning of the supplementary sentence
  • Example: 東京(とうきょう)タワーは1958(ねん)完成(かんせい)しました。ちなみに、スカイツリーは2012(ねん)です。

SIMILAR WORDS:

  • ちなみに: incidentally, by the way (the addition is related to the topic)
  • ところで: by the way (can shift to a completely different topic)
  • ついでに: while at it, while we're on the subject

REGISTER:
Usable in both casual and semi-formal speech. Common in presentations, articles, and everyday conversation.