Project planning
Measure how many working days sit between kickoff and launch.
Einheitenrechner
Datumsdauer-Rechner
Messen Sie die Zeitspanne zwischen zwei beliebigen Daten in Sekunden.
Wählen Sie ein Start- und Enddatum, um sofort die Länge der Spanne in Tagen, Wochen, Monaten, Jahren und gängigen, arbeitstagsfreundlichen Einheiten zu sehen.
Calendar-day difference
Date after or before N days
Weekdays only vs business days with holidays
Count days between dates
Pick a start and end date to measure the calendar span. Results use standard “between dates” semantics, so the same day returns 0 days.
Quick planning presets
Set the end date from the start date with one tap for common planning horizons.
Days between your dates
There are 30 calendar days between 28. Feb. 2026 and 30. März 2026.
Months and years are approximate so you can estimate longer timelines quickly.
Calendar days
30
Weekdays only (Mon–Fri)
21
Counts weekdays after the start date up to the end date.
Selected workweek days
21
Mon-Fri
Business days with holidays
21
Starts from the weekday count, then removes national public holidays for the selected country.
Weeks (exact)
4,29
Months (approx.)
0,99
Years (approx.)
0,082
Excluded holidays
No holiday dates were excluded for the current range and workweek.
Add or subtract days from a date
Find the date after 7, 30, or 90 days, or move backward from a deadline to a planning start date.
Offset shortcuts
Use positive values for future dates and negative values for past dates.
+30 days from 30. März 2026 is 29. Apr. 2026.
Resulting date
29. Apr. 2026
Day of week
Mittwoch
Weekdays and business days
Compare the raw weekday count with a holiday-aware business-day count so you can plan staffing, approvals, shipping, and project schedules more accurately.
The holiday-aware count uses public holidays for the selected scope.
Optional. Use a more specific holiday scope when your planning depends on state-level public holidays.
Custom workweek
Pick the weekly schedule that matches your team, operation, or market before holidays are removed.
United States
Public holidays can be filtered by the selected holiday scope. Company shutdowns and custom leave calendars are not included.
2026
When this date calculator helps most
Shipping and procurement
Check whether a quoted lead time includes weekends or public holidays.
HR and operations
Count business days across notice periods, onboarding windows, or approval timelines.
Häufig gestellte Fragen
Werden Schaltjahre berücksichtigt?
Ja. Der Rechner zählt die tatsächlichen Kalendertage, daher sind Schalttage und Monatslängen automatisch enthalten.
Wie werden Arbeitstage berechnet?
Die Gesamtzahl der Arbeitstage umfasst Montag bis Freitag und lässt Samstage und Sonntage aus. Gesetzliche Feiertage werden nicht abgezogen.
Kann ich rückwärts in der Zeit messen?
Absolut. Wenn das Enddatum vor dem Startdatum liegt, tauscht das Tool sie automatisch und gibt trotzdem die positive Spanne zurück.