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Business Days Calculator - Count Workdays Between Dates

Calculate business days between two dates by country, excluding weekends, public holidays, and custom holidays. No login required.

No login. No database. Calculator inputs are not stored on a server.

Use this calculator for project deadlines, invoice payment windows, SLA planning, payroll cutoffs, and other date ranges where weekends and holidays matter. The calculation runs in your browser and your inputs are not stored on a server.

Business Days Calculator

Count working days between two dates with weekend and holiday settings.

Non-working days

Select the days your business or company does not work.

Count the start date if it is a business day.

Count the end date if it is a business day.

Load public holidays for the selected country and remove them from working days.

Enter one holiday per line, such as 2026-05-15 Company holiday or 2026-06-01.

Quick dates

Business days formula

DeadlineDays starts with the calendar dates in the selected range, applies your include-start and include-end settings, then removes non-working days.

  1. Count calendar dates from the start date to the end date.
  2. Apply whether the start date and end date should be included.
  3. Remove dates that match the selected non-working days.
  4. Remove public holidays for the selected country when enabled.
  5. Remove custom holidays entered by the user.
  6. If a public holiday and custom holiday share the same date, count that date once.

Examples

Project deadline example

Input
Start: May 14, 2026. End: June 30, 2026. Country: US.
Output
The result shows business days, calendar days, weekends, and holidays excluded.

Useful when estimating a delivery window for a project plan or client commitment.

Invoice payment window example

Input
Start: invoice date. End: expected payment date. Exclude holidays.
Output
The calculator shows the working days available for payment processing.

This helps finance teams review practical payment windows without treating weekends as workdays.

HR, payroll, or SLA planning example

Input
Start and end dates around a payroll cutoff or SLA review period.
Output
Weekend and holiday exclusions make the business-day total easier to audit.

Use the result as a planning reference before confirming dates against policies or contracts.

FAQ

What is a business day?

A business day is a date that is not excluded by the selected non-working days or holiday settings.

Are public holidays included?

Public holidays are excluded when the public holiday toggle is enabled and holiday data can be loaded for the selected country.

Can I include the start date?

Yes. Turn on Include start date to count the start date when it is a business day.

What happens if a public holiday falls on a weekend?

Weekend days are already excluded, so the same date is not double-counted as both a weekend and a holiday.

Can I add company holidays?

Yes. Add custom holidays one per line using YYYY-MM-DD and an optional name.

Is this legal, payroll, or accounting advice?

No. It is a general date planning tool. Verify critical deadlines with official calendars, policies, contracts, or advisors.

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Disclaimer

This calculator is a general date planning tool and is not legal, accounting, payroll, tax, employment, shipping, or contractual advice. Verify important dates with official sources or qualified professionals.