Working Days Calculator
Calculate working days and weekend days in a period
期間を入力
計算結果
営業日から日付を計算
計算結果
About Working Days Calculator
The Working Days Calculator is an online tool that instantly computes the number of working days (Monday through Friday) in a period by entering start and end dates. Both the start and end dates are included in the count.
In addition to working days, it displays total calendar days, total weekend days, and separate counts for Saturdays and Sundays. The calculator also supports excluding Japanese holidays and calculating dates based on business day offsets. Useful for project effort estimation, work schedule planning, payroll working day verification, and paid leave calculation across various business scenarios.
All processing is done entirely in your browser, so no input data is ever transmitted externally.
How to use Working Days Calculator
- Enter the start date for the period you want to count.
- Enter the end date and confirm whether the range should include that day.
- Review working days, calendar days, weekend days, and the Saturday/Sunday breakdown.
- Use the result for delivery planning, payroll checks, or project schedule estimates.
Benefits of Working Days Calculator
- You can calculate working days in real time, which speeds up delivery and workload checks.
- Separate Saturday and Sunday counts make the date-range breakdown easier to explain.
- Inclusive date-range handling helps payroll, attendance, and operating-day checks stay consistent.
- Browser-only processing keeps your schedule dates on your device.
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