Moon: がつ/げつ/つき/かげつ

Practice the correct reading of 月.

How to use this quiz

  • Type the reading of 月 as がつ/げつ/つき/かげつ.
  • Enter your answer in hiragana or romaji (typing will be converted automatically).
  • Kanji is not supported - please use hiragana or romaji only.
  • After each try, you'll see the correct answer.
  • At the end, you can retry missed items or restart the entire quiz.

Explanation

This page is a quick practice guide to the main readings of 月.
For full details and edge cases, please consult your textbook or a trusted dictionary.


Which reading to use?

You’ll meet 月 in four very common ways. Use this rule of thumb:

つき — the moon itself / standalone “moon”
例:月がきれい (“The moon is beautiful.”)

がつ — calendar months (after a number)
例:一いち月・二に月・三さん月(いちがつ・にがつ・さんがつ)

げつ — fixed compounds (time words / weekday)
例:今こん月・来らい月・先せん月・月曜よう日(こんげつ・らいげつ・せんげつ・げつようび)

かげつ — duration in months (“for X months”)
例:一いっか月・二にか月(いっかげつ・にかげつ)


Core patterns

Calendar months → がつ

Numbers + 月 = がつ.

  • 一いち月 いちがつ / 二に月 にがつ / 三さん月 さんがつ …
  • 四し月 しがつ(not よんがつ)
  • 七しち月 しちがつ(not なながつ)
  • 九く月 くがつ(not きゅうがつ)
  • 十じゅう月 じゅうがつ
  • 何なん月 なんがつ

Time words / weekday → げつ

Fixed compounds with a time meaning use げつ.

  • 今こん月 こんげつ / 来らい月 らいげつ / 先せん月 せんげつ
  • 月曜よう日 げつようび

Duration (“for X months”) → かげつ

Use かげつ to show how long something lasts.

  • 一いっか月 いっかげつ
  • 二にか月 にかげつ
  • 三さんか月 さんかげつ
  • 六ろっか月 ろっかげつ
  • 十じゅっか月 じゅっかげつ
  • 何なんか月 なんかげつ

Standalone “moon” → つき

  • 月(つき) — “the moon”

Common traps to watch

  • 「四し月」= しがつ(× よんがつ)
  • 「七しち月」= しちがつ(× なながつ)
  • 「九く月」= くがつ(× きゅうがつ)
  • 「一いっか月」= いっかげつ(small っ)
  • Don’t mix up month names (がつ) with month lengths (かげつ).
    • 一いちがつ = January; 一いっかげつ = for one month

Quick checklist before you answer

  • After a number? → probably がつ
  • Talking about this/next/last month or Monday? → げつ
  • Talking about a duration (“for X months”)? → かげつ
  • Is it just the moon as a noun? → つき