Project planning
Measure how many working days sit between kickoff and launch.
Eenheidconverter
Datum Duur Calculator
Meet de tijd tussen twee willekeurige data in seconden.
Kies een start- en einddatum om direct de lengte van de periode te zien in dagen, weken, maanden, jaren en gangbare, werkdagvriendelijke eenheden.
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 mrt 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 mrt 2026 is 29 apr 2026.
Resulting date
29 apr 2026
Day of week
woensdag
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.
Veelgestelde Vragen
Worden schrikkeljaren meegenomen?
Ja. De calculator telt de werkelijke kalenderdagen, dus schrikkeldagen en maandlengtes worden automatisch meegenomen.
Hoe worden werkdagen berekend?
Het totaal aantal werkdagen omvat maandag tot en met vrijdag en slaat zaterdagen en zondagen over. Feestdagen worden niet verwijderd.
Kan ik terug in de tijd meten?
Absoluut. Als de einddatum eerder is dan de startdatum, wisselt de tool deze automatisch om en geeft nog steeds de positieve periode terug.