Is there an easy way to know when 日 is にち and when it's じつ?

I make a lot of mistakes in the readings of words with 日 in them, it’s hard to remember whether I’m supposed to read it as にち or as じつ. WK doesn’t even seem to acknowledge this difficulty, the reading info just says “this is the reading you learned with the kanji, you should know this” for all of these words, which is kind of infuriating!

Any tips?


In my experience you just have to memorize the readings, however, there seems to be some instances where one is favored over the other. For dates, and when you are talking about the daytime in general, you will usually use にち. じつ seems to show up when you are talking about a specific kind of day. For example, 休日 kyuujitsu - day-off, and 祭日 saijitsu - holiday. Frustrating, I know.


Don’t be frustrated. The more you use the language, the easier it gets to remember these things. There are no rules, and I wouldn’t try to rely on any particular trick because in the end, the goal is for it to just “feel” right because you’ve used/heard it enough.

What you can do is practice KaniWani and Kamesame to reinforce producing those readings, but other than that, keep going and it’ll eventually sink in. You’re early in the process, no need to rush.


It’s read as にち or じつ whenever it’s not read as ひ or か :stuck_out_tongue:

Just kidding, I have noticed some patterns myself, but I’m no expert so take it with a grain of salt:

  • The reading is ひ if 日 is on its own
  • The reading is にち whenever 日 refers to the sun or an amount of days. Examples include: 毎日、何日、日光. (Last one is rendaku’d, so the reading is にっこう)
  • Some readings are unique, and you just have to learn their unique readings, like: 日本、今日.
  • For phrases that translate to “n-th day” in english the reading for 日 is か, like 二十日、六日. Keep in mind the exception for 一日 is いちにち.
  • In all other cases, the reading is じつ.

I had the same question!

What helped me was taking out a piece of paper and writing out a list of all the terms (up to my level) that include 日, writing out the reading and meaning for each. Then I sorted them by reading. I could see a pattern similar to that described by @AFMFG… I encourage you to do it yourself! You’ll gain more confidence and certainty.

勇気 Courage!

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