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How to Say ‘One month’ in Japanese

一かげつ

ichi ka getsu

[ee-chee kah get-soo]

💬 Usage Tip: [一] + counter [かげつ] (months). For months, use [〜かげつ]: [二かげつ], [三かげつ]…

🇯🇵 In Japan: Follow-ups in Japan are often scheduled by time blocks like [一かげつ] rather than specific dates during the consultation; reception may finalize the exact date/time later.

Phrase Breakdown

ichi

[ee-chee]

one (1)

The kanji for 'one.' In time expressions it combines with counters (e.g., 一かげつ).

Example

一かげつ後に結果を確認します。

We will confirm the results in one month.

ka

[kah]

month marker (part of かげつ)

This か is part of かげつ (ヶ月), the counter for months (duration). It’s not used alone here.

Example

一かげつぐらい様子を見ましょう。

Let’s watch and see for about one month.

げつ

getsu

[get-soo]

month counter (getsu)

げつ is the end of かげつ (ヶ月), used to count months as a duration (e.g., 一かげつ = one month).

Example

検査は一かげつに一回です。

The test is once a month.

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