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営業日計算機

無料の営業日計算機。2つの任意の日付間の営業日(月~金)を、週末を除いて数えます。プロジェクトのタイムライン、休暇計画に。

Runs in your browser

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Understanding · Counting the days that count.

この詳細な解説章は現在、英語版のみで提供されています。上の変換ツールはあなたの言語で動作しますが、長文の解説記事はまだ翻訳されていません。

よくある質問

Quick answers.

Are public holidays excluded?

Currently we only exclude weekends (Sat/Sun). Public holidays vary by country and region — check your local calendar.

How do I count working days in a month?

Set start = 1st of month, end = last day of month. Most months have 20-23 working days.

Are working weeks always Mon-Fri?

We assume Mon-Fri. Some countries (e.g. parts of the Middle East) have Sun-Thu working weeks — we don't currently support that.

Does it count both endpoints?

Yes — both start and end dates are included in the count if they're working days.

Is the calculator free?

Yes — fully free, no signup, runs in your browser.

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