Date Calculator
Find the exact span between two dates in days, weeks, months and years, or project a new date by adding or subtracting years, months, weeks and days. Business-day mode skips weekends for project and deadline planning.
TheCalculators — Date Calculator
Printed thecalculators.com
Duration
90 days
0 y 2 m 29 d · 12 wk 6 d · 65 business days
- Start
- November 8, 2026
- End
- February 6, 2027
- Years/Months/Days
- 0 y 2 m 29 d
- Weeks + Days
- 12 wk 6 d
- Total Days
- 90
- Business Days (Mon–Fri)
- 65
- Weekend Days
- 25
- Hours
- 2,160
Calendar month counting follows the common convention (e.g. Jan 31 → Feb 28 counts as 1 month). Business days exclude Saturdays and Sundays but not public holidays.
Most useful next
Formula
duration = end − start (calendar days) · new date = start ± years/months (calendar) ± weeks/days
- • Between mode: both dates are converted to timestamps; the difference is calendar days.
- • The years/months/days breakdown borrows month lengths like subtraction with carries.
- • Add mode: apply years & months on the calendar first, then weeks/days (or step through business days).
Pro tips
- • Toggle "include end day" when counting overnight stays or inclusive event ranges.
- • Business-day mode is ideal for "10 working days from Friday" style deadlines.
- • Adding months clips to the end of shorter months (Jan 31 + 1 mo → Feb 28/29).
FAQ
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