Exact Date & Days Calculator
Calculate the exact number of days, weeks, months, and working business days between any two dates, or add and subtract days from a date with 1-click holiday and weekend controls.
⏱️ Complete Unit Conversion & Weekday Count (Click to Copy)
~2.04 Months30, 45, 60, 90 & 180 Days From Oct 31, 2026
Compare exact Calendar Dates vs Business Dates (skipping Saturdays & Sundays) from your selected Start Date.
| Offset | Calendar Date (All Days) | Business Date (Mon–Fri) | Action |
|---|---|---|---|
| +7 Days | Sat, Nov 7, 2026 | Tue, Nov 10, 2026 | |
| +14 Days | Sat, Nov 14, 2026 | Thu, Nov 19, 2026 | |
| +21 Days | Sat, Nov 21, 2026 | Mon, Nov 30, 2026 | |
| +30 Days | Mon, Nov 30, 2026 | Fri, Dec 11, 2026 | |
| +45 Days | Tue, Dec 15, 2026 | Fri, Jan 1, 2027 | |
| +60 Days | Wed, Dec 30, 2026 | Fri, Jan 22, 2027 | |
| +90 Days | Fri, Jan 29, 2027 | Fri, Mar 5, 2027 | |
| +120 Days | Sun, Feb 28, 2027 | Fri, Apr 16, 2027 | |
| +180 Days | Thu, Apr 29, 2027 | Fri, Jul 9, 2027 | |
| +365 Days | Sun, Oct 31, 2027 | Fri, Mar 24, 2028 |
Days in Each Month (2026)
2026 is a Standard Year (365 days).
How to Calculate Days & Business Days Between Two Dates
Exclusive vs Inclusive Day Counting
By default, subtracting Start Date from End Date measures the exact elapsed duration (e.g., Oct 1 to Oct 10 = 9 days). For employment contracts, hotel bookings, or leave applications where both start and end dates count, enable "Include End Date (+1 Day)".
Business Days & Weekend Exclusion
Our engine tallies the exact occurrences of every Monday through Sunday inside your date range, automatically separating Monday–Friday working days from Saturday–Sunday weekend days and subtracting any custom public holidays.
30, 60, 90 & 180-Day Deadline Math
Notice periods, visa stays, invoice net terms (Net-30, Net-60, Net-90), and probation periods specify fixed day counts rather than calendar months. Use our 1-click +30d / +60d / +90d / +180d buttons to avoid 31-day month miscalculations.
Frequently Asked Questions — Date & Days Calculator
How many days are between two dates?
Enter your Start Date and End Date above to see the exact number of calendar days, weeks, months, and working business days between them. All calculations use UTC midnight timestamps so Daylight Saving Time (DST) transitions never cause off-by-one-day errors.
Should I check 'Include End Date (+1 Day)'?
Check 'Include End Date' when both the first day and the last day are full active days—such as annual leave requests, equipment rentals, or school terms. Leave it unchecked when measuring the time elapsed from one date to another.
How do I calculate 30, 60, or 90 business days from today?
Switch to the 'Add / Subtract Days' tab, enable 'Count Business Days Only (Skip Sat & Sun)', and click +30d, +60d, or +90d. The calculator steps forward skipping every Saturday and Sunday to give you the exact working deadline date.
Can I customize the working days for a 6-day or Sunday–Thursday workweek?
Yes! Open the 'Custom Workdays' tab and toggle any day of the week (Sun–Sat) on or off, set your daily working hours, and enter public holidays to compute net working days and billable hours.