Calendar days and working days look the same on the surface but feel very different in real life.
About this calculator
Calendar days and working days look the same on the surface but feel very different in real life. A 'one month' deadline that means 30 calendar days is actually only 20-22 working days after subtracting weekends, and even fewer once you account for public holidays, leave days and Friday-evening drop-offs. This calculator gives you the precise count for any date range, with full control over which days count as work and which holidays apply.
By default, only Monday through Friday count as working days, with Saturday and Sunday treated as weekends. Toggle the includeSaturday flag for India's common 6-day work week (or for retail and hospitality), and toggle includeSunday for emergency-services or healthcare workflows where Sunday is a normal shift day. Add your specific holiday list, one per line in YYYY-MM-DD format -- public holidays, regional holidays (Pongal, Onam, Bihu, Eid) and company holidays all subtract correctly.
This is the first tool to reach for when planning project timelines, calculating leave balances, sizing a work-from-home request, comparing job offers (75 working days off vs 30 calendar days off is a real difference), or estimating contract billing in business days. Pair this with the [[countdown]] calculator for tracking a single deadline, the [[date-difference]] calculator for general date arithmetic, and the [[age]] calculator for life-cycle dates. For project planning across many task durations the [[time]] calculator is also useful.
Common uses
- Project deadlines -- converting calendar deadlines to working day plans
- HR leave balance and notice period calculations
- Contract and consulting -- billing in business days vs calendar days
- Court and legal timelines that explicitly count working days
- Travel planning -- finding number of working days inside a leave window
Frequently asked questions
Should I include the start and end date in the count?
Yes -- this calculator includes both endpoints. A start of Apr 1 and end of Apr 1 counts as 1 day. If your contract or project specifies
What if a public holiday falls on a Sunday?
It
How do I handle half-days like Diwali or year-end?
Treat them as a full holiday if it makes business sense, or as a regular working day with a manual adjustment. The calculator doesn
Can I use this for international holiday lists?
Yes -- the holiday list is fully manual. Paste any list of dates you want subtracted, in YYYY-MM-DD format. Many companies maintain a master holiday calendar that you can copy in directly.
Why does the calendar weeks figure show a decimal?
Because the date range usually doesn