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Calculate the exact duration, business days, working hours, and weekend/holiday exclusions between any start and end date.
⏱️ Total Calendar Duration
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Chronological breakdown excluding non-working days
📅 Start date was
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📅 End date is
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Full Breakdown & Summary
Calculating the exact interval between two dates is essential for project management, event planning, and tracking personal milestones. This calculator provides breakdowns in years, months, weeks, days, hours, and minutes.
Standard calendars include weekends and holidays, which can distort business calculations. Filtering out Saturdays and Sundays gives the net working days, typically representing a 5-day work week.
A standard year has 365 days, but leap years add a 366th day (February 29) every four years to align with the Earth's orbit. This calculator automatically adjusts for leap years in all calculations.
Select your start date and end date from the calendar pickers.
Choose your weekend exclusion schedule and country public holiday filter.
Instantly see total calendar duration, net business days, and working hours.
Calculate exact working days between kickoff and delivery dates without manual spreadsheet counting.
Verify contractual business day turnaround times and statutory notice requirements.
Determine exact billable hours and working days within any custom invoice period.
Compute precise calendar days versus work days when planning annual paid time off.
Frequently asked questions
The calculator iterates day-by-day between your start and end dates. When standard 5-day week is chosen, all Saturdays and Sundays are excluded. When 6-day week is chosen, only Sundays are excluded. For Middle East schedules, Fridays and Saturdays are excluded.
Our algorithm evaluates country-specific statutory and national bank holidays (such as New Year's Day, Independence Day, Christmas, Thanksgiving, Labor Day, and Memorial Day). If a holiday falls on a regular working day, it is subtracted from the business days count.
Standard date difference calculations do not count the final end day (e.g. from Monday to Tuesday is 1 day). If you are calculating an inclusive work span where you work on both the first and last day (e.g. Monday through Friday = 5 working days), check 'Include end day in count'.
Yes. Leap years (containing 366 days and February 29) are fully factored into every date range calculation automatically.
Working hours multiply your total net business days by your specified daily working hours (default is 8 hours per day). You can adjust this to match 7-hour or 7.5-hour shifts.
Yes! Use the 'Weekend Exclusions' dropdown to select 'Exclude Friday & Saturday' for Middle East work weeks, 'Exclude Sunday Only' for 6-day work weeks, or 'None' for 7-day calendar spans.
Click 'Share Result' or copy the browser URL after calculating. All your selected dates, weekend options, and holiday filters are encoded in the URL so recipients see the exact same calculation.
Common uses include project management sprint planning, legal notice period compliance, contractual turnarounds, payroll cycles, and vacation entitlement planning.
All date inputs default to midnight (00:00:00) in your local device timezone. When calculating spans, the engine computes absolute UTC time differences so DST shifts or timezone differences do not skew day counts.
Yes! Enter the semester start and end dates, select your country's public holiday filter, and choose your weekend schedule to see the exact count of active instruction or work days.