Date Calculator
Measure the gap between two dates in years, months and days, total days and weeks, and working days with the weekend you choose — Saturday and Sunday, or Friday and Saturday as in Bangladesh. Switch modes to add or subtract days, weeks, months or years, or a number of business days, from a date.
How to use the Date Calculator
- Choose "Difference between dates" or "Add / subtract".
- Pick the dates, or a start date and the amount to add or subtract.
- Choose which days count as the weekend for business-day results.
- Press Calculate to see the result.
- Copy the result to use it elsewhere.
Features
- Years, months and days plus total days and weeks
- Business days with configurable weekend days
- Optional inclusion of the end date
- Add or subtract years, months, weeks and days
- Add business days that skip weekends
- Month-end clamping (31 Jan + 1 month = 28/29 Feb)
Benefits
- Count working days for project and delivery deadlines
- Work out notice periods and contract end dates
- Plan around Friday–Saturday or Saturday–Sunday weekends
Frequently asked questions
Are public holidays excluded from business days?
No. Only the weekend days you select are excluded. Subtract public holidays yourself, as they differ by country and year.
Should I include the end date?
By default the result counts the days between the dates, so 1–2 October is 1 day. Tick "Include the end date" to count both days, which suits leave or rental periods.
What happens when I add a month to 31 January?
The date is clamped to the last day of February (28th, or 29th in leap years), the same rule most spreadsheets use.
Can I set a Friday and Saturday weekend?
Yes. Choose "Friday + Saturday" for Bangladesh and the Gulf, or pick custom weekend days.
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