Date Difference Calculator
Days between two dates, business days only, or add days to a date.
Business days exclude weekends only, not public holidays, which differ by country and employer.
How this works
Gap in days = End − Start
Inclusive count = gap + 1
- Business days exclude weekends only — not public holidays.
- A year holds about 260 weekdays, near 250 after typical public holidays.
- Months count as calendar months: 15 Jan → 15 Mar is exactly 2 months.
Should I include the end date?
For "how long until" questions, no. For counting the days a booking, rental or leave period covers, yes — otherwise you lose a day.
Does the business-days option remove public holidays?
No, weekends only. Public holidays differ by country and region, so subtract the ones that apply to you.
How many working days are in a year?
About 260 weekdays, dropping to roughly 250 after typical public holidays and 225-235 after annual leave.
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