Calculate the exact number of days, weeks, and months between any two dates.
Saturday, March 28, 2026
Monday, April 27, 2026
Duration
30 days
30 days
Calendar Days
30
Business Days
21
Weekend Days
9
Weeks + Days
4 weeks, 2 days
30-day notice periods, 60-day warranties, 90-day probation, 180-day review cycles, 1-year lease terms.
Sprint durations, quarterly milestones, fiscal year planning, deadline tracking for deliverables.
Visa validity periods, passport expiry checks (180 days), trip duration calculations, itinerary planning.
Days until birthday, wedding countdown, pregnancy due dates, age calculations, anniversary tracking.
The calculator counts every calendar day between your start and end dates. It uses the Gregorian calendar and automatically handles months with different lengths (28, 29, 30, or 31 days) and leap years.
Business days exclude Saturdays and Sundays but do not account for public holidays, which vary by country and region. For exact business day calculations including holidays, consult your local calendar.
Months calculation: The year-month-day breakdown follows calendar logic — moving from March 15 to June 20 counts as 3 months and 5 days, regardless of whether those months have 30 or 31 days.
All calculations are based on the Gregorian calendar. Business days exclude weekends but not public holidays.