---
title: "Business Days Calculator | Numequo"
description: "Count business days between two dates with configurable weekends and holidays. Includes the formula and practical examples."
canonical: "https://www.numequo.com/time/dates-calendar/business-days-calculator/"
locale: "en"
---
[Numequo](https://www.numequo.com/) › [Time](https://www.numequo.com/time/) › [Dates and calendar](https://www.numequo.com/time/dates-calendar/)

# Business Days Calculator

Set the interval, weekend pattern and any dates that must be excluded.

## Input data

- **Start date** - type: date; default: 2026-08-03
- **End date** - type: date; default: 2026-08-14
- **Weekend days** - type: choice; default: sat-sun; options: Saturday and Sunday, Friday and Saturday, Sunday only, No weekend
- **Include start date** - type: choice; default: yes; options: Yes, No
- **Excluded holidays** - type: text; Optional dates separated by commas: 2026-01-01, 2026-12-25

## How it works

Each date in the interval is counted when it is neither a selected weekend day nor an excluded holiday.

## Quick examples

- **Two working weeks** - Start date: 2026-08-03, End date: 2026-08-14, Weekend days: sat-sun, Include start date: yes, Excluded holidays: 
- **Exclude one holiday** - Start date: 2026-12-21, End date: 2026-12-31, Weekend days: sat-sun, Include start date: yes, Excluded holidays: 2026-12-25
- **Friday–Saturday weekend** - Start date: 2026-08-02, End date: 2026-08-08, Weekend days: fri-sat, Include start date: yes, Excluded holidays: 

## Understanding your result

The total follows your settings rather than a country-specific official calendar. The end date is included; the start date is optional.

Last verified: 29 September 2026 (2026-09-29)

## Frequently asked questions

### Are holidays added automatically?

No. Enter the dates you want to exclude so the calculator works for any country.

### Is the end date counted?

Yes, when it is an eligible business day.

### Can I change weekend days?

Yes. Several common weekend patterns are available.

## Related calculators

- [Due Date Calculator](https://www.numequo.com/time/dates-calendar/due-date-calculator/) - Add calendar, business or working days to calculate a due date.
- [Date Difference Calculator](https://www.numequo.com/time/dates-calendar/date-difference-calculator/) - Count days and weeks between any two dates.
- [Day of the Week Calculator](https://www.numequo.com/time/dates-calendar/day-of-week-calculator/) - Find which weekday corresponds to any valid calendar date.
- [Age Calculator](https://www.numequo.com/time/dates-calendar/age-calculator/) - Calculate an exact age between two dates.
- [Date Add or Subtract Calculator](https://www.numequo.com/time/dates-calendar/date-add-subtract-calculator/) - Add or subtract days, weeks, months or years from any calendar date.
- [ISO Week Number Calculator](https://www.numequo.com/time/dates-calendar/iso-week-number-calculator/) - Find the ISO week number and week-based year for any date.

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