How to use the business days calculator
- Pick a mode: Add/subtract business days or Count between dates.
- Enter your start date (and end date when counting).
- For add/subtract, enter how many business days and choose Add or Subtract.
- Read the result date or business-day count. Use Copy link to save or share the scenario.
Example: 30 business days from a contract start
Start date Monday, June 1, add 30 business days: each Monday–Friday counts; Saturdays and Sundays are skipped. You get a landing date roughly six calendar weeks later—not the same as “30 calendar days,” which would be about four weeks. Compare with the add/subtract date tool if your contract says “30 days” without the word business.
Business days vs. calendar days
Business days (workdays) usually mean Monday through Friday. Calendar days include weekends. Loan rescission periods, some freight terms, and payroll cutoffs specify which rule applies—when in doubt, read the document. This page implements Mon–Fri only; it does not know your country’s public holidays.
To count every day between two dates, use the date difference calculator. To shift a date by calendar days or months, use add/subtract date.
Frequently asked questions
What date is 30 business days from today?
Add/subtract mode → start date → Add → 30 business days. Weekends are skipped.
How many business days between two dates?
Count between dates → enter start and end. Weekdays in the range are counted (Mon–Fri).
What is the difference between 30 days and 30 business days?
30 days includes weekends—use add/subtract date. 30 business days skips Sat/Sun.
Are public holidays excluded?
No—only Saturday and Sunday. Regional holiday calendars are not built in here.
Are Saturdays and Sundays counted?
No—this page is Monday through Friday only.
My contract says “30 days” not “business days”—which tool?
Usually calendar days → add/subtract date. Use this page when the document says business/working days.
How is this different from add/subtract date?
Add/subtract moves by calendar days; this page moves by weekdays.
How is this different from date difference?
Date difference counts all calendar days; this page counts or adds business days.
Can I share my calculation?
Copy link in the results panel saves mode and dates.