Business Date Calculator

Choose a start date, business-day offset, and optional ISO holiday dates to calculate a future or past working date locally.

Start date

Business-day offset

Optional holidays to skip (YYYY-MM-DD, one per line)

Business date

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—Direction

0Custom holidays supplied

Saturday and Sunday are excluded. No country holiday calendar is assumed unless you enter dates yourself.

Core timing workflows

Start with a direct timer, stopwatch, alarm or focus workflow. Calendar, date arithmetic, clocks and scheduling specialists remain available from the full Date & Time hub.

All 76 date & time tools

Online TimerCountdown, sound, repeat & fullscreen StopwatchLaps, precision & fullscreen Countdown TimerFocused countdown workflow Alarm ClockAlarm at a local clock time PomodoroFocus and break cycles Interval TimerWork/rest rounds Presentation TimerTalk timing with warnings Classroom TimerProjector-friendly countdown

Add or subtract business days

The calculator skips Saturday and Sunday and can also skip holiday dates that you explicitly enter. This is different from Business Days Calculator, which counts workdays between two endpoints rather than finding an offset date.

No hidden holiday assumptions

Public holidays vary by country, state, employer, school, and contract. The tool therefore never inserts a holiday calendar unless you provide the dates yourself.

Business-day offset semantics

The starting date is a reference point, not business day #1. Each step skips Saturday, Sunday, and any custom ISO holiday date you entered. A negative offset walks backward under the same rule.