# Business Days Calculator

Calculate business days between two dates or add working days to a date. Excludes weekends with optional Saturday inclusion for accurate scheduling.

## What this calculates

Planning a project timeline or shipping estimate? This business days calculator counts working days in a date span or adds a set number of business days from today, automatically skipping weekends. You can optionally include Saturdays as working days.

## Inputs

- **Mode** — options: Count business days between dates, Add business days to today — Choose whether to count days or add days
- **Calendar Days Between** — min 0, max 36500 — Total calendar days in the span (used in Count mode)
- **Business Days to Add** — min 0, max 25000 — Number of business days to add from today (used in Add mode)
- **Include Saturday as Working Day** — Toggle on if Saturdays count as business days

## Outputs

- **Business Days** — Number of business (working) days
- **Calendar Days** — Total calendar days in the period
- **Weekend Days Skipped** — Number of weekend days excluded from the count

## Details

Business days (also called working days) typically exclude Saturdays and Sundays. Many industries, legal deadlines, and shipping estimates are measured in business days rather than calendar days.

In Count mode, enter the total calendar days in a period and the calculator tells you how many are business days. In Add mode, enter the number of business days you need and it tells you how many calendar days that spans, accounting for weekends along the way.

Some regions and industries count Saturday as a working day. Toggle the Saturday option on if that applies to your situation. Note that this calculator does not account for public holidays, which vary by country and region.

## Frequently Asked Questions

**Q: Does this calculator account for public holidays?**

A: No, this calculator only excludes weekends (Saturdays and Sundays by default). Public holidays vary by country and region. Subtract any holidays that fall on weekdays from the result for a more accurate count.

**Q: Why would I include Saturday as a working day?**

A: In many countries and industries (banking in some Asian countries, retail, construction), Saturday is a regular working day. Toggle this option on if your work schedule includes Saturdays.

**Q: What is the difference between business days and calendar days?**

A: Calendar days include every day (Monday through Sunday). Business days typically only include Monday through Friday. A 7-calendar-day span usually contains 5 business days.

**Q: How do shipping companies count business days?**

A: Most carriers start counting the next business day after a package is shipped. So '3 business days' shipping on a Thursday order typically means delivery by the following Tuesday (skipping Saturday and Sunday).

**Q: Is the start date counted as a business day?**

A: In Add mode, the calculation starts from the day after today. In Count mode, the first day of the span is included. This matches common business conventions.

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Source: https://vastcalc.com/calculators/everyday/business-days
Category: Everyday Life
Last updated: 2026-04-21