Business Days Calculator
Calculate the number of working days between two dates, excluding weekends and optional holidays.
How it works
Enter Start & End Date
Select the date range you want to count business days between.
Add Holidays (optional)
List any holiday dates (YYYY-MM-DD) to exclude them from the count too.
Calculate
Get the working day count, excluding weekends and any holidays you listed.
Common use cases
Project Deadlines
Figure out how many working days remain before a deliverable is due.
Shipping & SLAs
Calculate expected delivery or response dates that only count business days.
HR & Payroll
Calculate notice periods, leave duration, or contract terms in working days.
Invoicing Terms
Work out "net 30 business days" style payment due dates.
Frequently asked questions
Does this account for public holidays?
Only if you list them. Paste holiday dates (one per line or comma-separated, in YYYY-MM-DD format) into the holidays box and they'll be excluded from the business day count along with weekends.
What counts as a business day?
Monday through Friday, excluding any dates you list as holidays. Saturday and Sunday are always excluded.
Are the start and end dates both included?
Yes, the calculation is inclusive of both the start and end date if they fall on a weekday.
Is my data stored or sent to a server?
No. All calculations happen entirely in your browser using JavaScript.