Count business days, add or subtract them, and skip holidays.
Enter your dates, toggle weekend exclusion, add custom holidays, and get instant results — all computed locally on your device.
When excluding, Saturday and Sunday are never counted as business days.
Inclusive counts the start and end date if they are business days. Exclusive counts only the days between them.
Enter dates in YYYY-MM-DD format, one per line. These will be skipped in addition to weekends.
Four steps, a working result.
No manual required — here's the entire flow.
Choose a mode
Count business days between two dates, or add / subtract a number of business days from a start date.
Set your dates
Pick a start and end date (or start date and day count). Use the quick chips for today, this week, or this month.
Fine-tune options
Toggle weekend exclusion, choose inclusive or exclusive counting, and add any custom holidays to skip.
Read and copy
Get the total business days, the resulting date, and a breakdown. Copy the summary or download it as a text file.
Built for planning, not guessing.
The details that make counting working days faster, without ever leaving your browser.
Runs on your device
All date math happens locally in JavaScript. Your dates and holidays never leave your device.
Weekend & holiday aware
Weekends are skipped by default, and you can add as many custom holidays as you need.
Two modes, one tool
Count the gap between two dates, or project a deadline by adding business days to a start date.
Questions people actually ask.
The short answers — with the long ones one tap away.
What is a business days calculator?+
A business days calculator counts the number of working days (Monday to Friday) between two dates, automatically excluding weekends. Many versions also let you exclude custom holidays. It is used to plan deadlines, shipping dates, project timelines, and payroll periods.
How does this business days calculator work?+
Enter a start date and an end date, choose whether to include or exclude weekends and holidays, and click Calculate. The tool counts every weekday between the two dates, optionally removing holidays you list. You can also add or subtract a number of business days from a starting date.
Are weekends automatically excluded?+
Yes. By default the tool excludes Saturday and Sunday. You can toggle weekend exclusion on or off, and you can add specific holiday dates to exclude as well.
Can I add or subtract business days from a date?+
Yes. Switch to the Add or Subtract mode, enter a start date and a number of business days, and the tool returns the resulting working day. Weekends and any holidays you specify are skipped.
Does the tool count the start and end date?+
You can choose. Inclusive mode counts both the start and end date if they are business days. Exclusive mode counts only the days in between. This matters for contracts and billing periods.
Is my date data uploaded to a server?+
No. All calculations run locally in your browser using JavaScript. Your dates and holidays never leave your device.
Can I use this tool for payroll or project planning?+
Yes. It is commonly used for payroll periods, project deadlines, shipping estimates, loan interest calculations, and any scenario that requires counting only working days.
Is this business days calculator free?+
Yes, it's completely free with no account, no sign-up, and no limit on how many times you use it.