Step 1
Choose the calculation mode
Count working days between dates, add workdays to a start date, or subtract workdays from a deadline.
Free Planning Tool
Free Business Days Calculator
A business days calculator counts working days between two dates or finds a deadline after adding or subtracting workdays. Use it for project timelines, invoice terms, contract notices, and delivery dates while excluding weekends and custom holidays.
Count workdays between datesAdd or subtract business daysExclude custom holidays
Built for
Project managers setting delivery dates
Consultants calculating contract notice periods
Freelancers planning invoice payment windows
Result
22
Updates instantly as you change dates, workday count, and holiday exclusions.
How To
How to use this calculator
Choose the mode that matches your timeline question, then copy the result into your proposal, invoice, or project plan.
Step 2
Enter your dates
Use the date fields for your project deadline, invoice due date, or contract notice period.
Step 3
Add holidays if needed
Paste holiday dates in YYYY-MM-DD format to exclude company closures or public holidays from the count.
Step 4
Use the result in your plan
Copy the summary into a proposal, invoice timeline, statement of work, or project schedule.
Calculator
Calculate business days
Use YYYY-MM-DD dates separated by commas, spaces, or new lines.
Answer
22 business days
22 business days from Tue, Jul 14, 2026 to Thu, Aug 13, 2026.
Calendar days
31
Excluded holidays
0
Weekend days
8
Date order
Forward
Use Cases
Where working-day math matters
Business day counts keep delivery expectations clear when weekends, holidays, and contract terms affect the real timeline.
Calculate net-30 payment windows in workdays.
Set realistic review dates for proposals and SOWs.
Find contract notice deadlines without weekend drift.
FAQ
Business days calculator FAQ
What counts as a business day?
A business day is usually Monday through Friday, excluding weekends and any holidays your company, client, or contract does not count as working days.
Does this calculator include the start date?
For counting between two dates, the calculator lets you choose whether to include the start date and end date. For adding or subtracting workdays, the start date is treated as day zero.
Can I exclude holidays from the count?
Yes. Add holidays as YYYY-MM-DD dates separated by commas or new lines. The calculator removes those dates from the business day total if they fall on a weekday.
How do I calculate a deadline that is 10 business days from today?
Choose Add workdays, set the start date to today, enter 10 workdays, and add any holidays you need to exclude. The result is the next deadline date after 10 working days.
Are business days the same as calendar days?
No. Calendar days count every day on the calendar. Business days count only working days, usually Monday through Friday, after excluding weekends and selected holidays.
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