Deadline Calculator

Find a due date using calendar days or Monday–Friday working days.

01
Starting fromwhat is the deadlinelater?

Working days count Monday through Friday and skip weekends. Public holidays are not removed.

Deadline
Weekday
Calendar days elapsed
Counting method
ISO date

How deadline dates are counted

Calendar-day mode advances through every date. Working-day mode advances only on Monday through Friday, which is useful for ordinary office deadlines when weekends should not count.

Boundary choiceBy default, counting begins after the start date. Turn on “Count the start date” when day one should be the starting date itself.

Working-day deadlines and holidays

The working-day option skips Saturdays and Sundays only. It does not automatically remove national, regional or company holidays because holiday calendars vary by location and organization.

Related calculators

Common questions

Does the start date count as day one?

Not by default. Enable “Count the start date” when the starting date should be included in the requested number of days.

Are holidays excluded from working days?

No. This calculator skips weekends but does not know your local or organizational holiday calendar.

Can I use this for payment terms?

Yes. It is useful for terms such as 15, 30, 45 or 60 calendar days, provided the contract's counting convention matches your selection.