Business Day
Count weekdays between two dates by excluding Saturdays and Sundays. This supports a simple work-plan comparison without applying Korean public holidays or an institution’s actual business calendar.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
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How to use this tool
Enter both dates and choose whether to include endpoints. Reversed dates are swapped, and turning inclusion off excludes both the starting and ending date.
Results and examples
Monday through Friday gives five weekdays with endpoints included. Excluding them leaves Tuesday through Thursday, or three days, even if one of those dates is a public holiday.
Limitations
- Substitute holidays, temporary holidays and company closures are not retrieved.
- Legal deadlines, bank settlement and contractual business-day rules require separate calendars.
Fields
| Field | Guidance and constraints |
|---|---|
| Start date | Check the unit and format displayed beside this field. |
| End date | Check the unit and format displayed beside this field. |
| Include start and end dates | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
How many days are Monday through Friday?
Monday through Friday gives five weekdays with endpoints included. Excluding them leaves Tuesday through Thursday, or three days, even if one of those dates is a public holiday.
Are public holidays excluded?
Substitute holidays, temporary holidays and company closures are not retrieved. Legal deadlines, bank settlement and contractual business-day rules require separate calendars.
