営業日計算機
任意の2つの日付間の営業日を計算します。150か国以上の週末と祝日を自動的に除外します。プロジェクト計画や期限計算に最適です。
Date Range
Options
Quick Ranges
営業日の結果
32
合計日数
22
営業日
10
週末
1
休日
From Jan 1, 2026 to Feb 1, 2026
レンジでの休暇
Martin Luther King Jr. Day
Jan 20, 2025 • 連邦の祝日
* Note: Holiday data is for illustration. Official database integration coming soon.
How to Calculate Business Days
Accurately count working days between any two dates for project planning, payroll, or legal deadlines.
1. Select Range
Choose your start and end dates. The calculator updates instantly as you change them.
2. Pick Country
Select a country to automatically account for its specific public and federal holidays.
3. Adjust Options
Toggle whether to include the start or end date in your final working days count.
Project Management Precision
Most projects fail because of poor timeline estimates. Our tool helps you see exactly how many actual working days you have to complete a task, ensuring realistic deadlines.
We handle the complexity of leap years and weekends so you can focus on the work itself.
More Useful Tools
Frequently Asked Questions
当社の営業日数計算機を使用する理由
150+ Countries
Official public holidays for countries worldwide.
Custom Holidays
Add company-specific holidays or regional observances.
Holiday Alerts
See which holidays fall within your date range.
Quick Ranges
One-click presets for this week, month, quarter.