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Business-day calculator
Count working days between dates, or add and subtract them with your own holiday list.
Your result
Download JSON report ↓Your working week, with the counting rules visible.
Start with Saturday and Sunday excluded, or choose a different non-working week. Only holiday dates you enter are excluded. A holiday that falls on an excluded weekday is not deducted twice. The calendar does not infer observed holidays, regional rules, shifts or time zones.
For a date range, the default excludes the start date and includes the end date. October 19 to October 26, 2026 therefore has five working days with a Saturday–Sunday weekend. Excluding October 20 leaves four. A single-date range counts that date only when both endpoint boxes are checked.
For an offset, the start is excluded and each next working day counts toward the offset. From Friday October 23, 2026, one working day forward is Monday October 26. A zero offset returns the original date, even on a non-working day.
Dates use UTC day indices to avoid daylight-saving shifts; they do not represent a meeting time or local timestamp. The calendar is proleptic Gregorian, including historical dates before a place adopted it. Reference: ECMAScript date arithmetic. Verify contractual, tax, court and official deadlines against the applicable rules.