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Business Days Calculator — Count, Add or Subtract Workdays

Count business days between two dates, or add and subtract workdays from a date. Excludes weekends and holidays, and lists each holiday removed. Free, no signup.

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Business Days Calculator

Deadlines and due dates, holidays included.

Business days 10 12 calendar days · 2 weekend days · 0 holidays excluded

Regime: Civil (common) · Both dates included

By day of week

Sun
1
Mon
2
Tue
2
Wed
2
Thu
2
Fri
2
Sat
1

Holidays removed in this range

No holidays in this range.

Deterministic calculation in your browser, in UTC. Business days = calendar days − weekends − holidays.

Settings

Holidays
Week
Work hours

A business days calculator counts the weekdays that are not holidays. Enter two dates to count the workdays between them, or add and subtract business days from a date to find a deadline. It excludes weekends and the holidays you select, and lists each one removed.

How it works

The calculator walks through every day in the range in UTC and counts a day as a business day when it is a weekday (Monday to Friday) and is not in the selected holiday calendar — the union of national, state and city holidays you choose, counted once. Working in UTC avoids any day shift caused by time zones.

The count follows a simple identity:

business days = calendar days − weekend days − holidays on weekdays

Counting conventions, shown next to every result:

  • Between dates: the range is inclusive on both ends by default. Turn on Exclude the start date to match deadline counting, which drops the first day and keeps the due date.
  • Add / Subtract: the base date does not count. Counting starts on the next business day (Add) or the previous one (Subtract); the result is the date of the Nth business day.

Worked example

From Monday, June 1, 2026 to Friday, June 12, 2026 there are 12 calendar days, 4 weekend days and no holidays, so 12 − 4 − 0 = 8 business days.

Adding 5 business days to Monday, June 1, 2026 lands on Monday, June 8, 2026: the base date is skipped, so the count runs Jun 2, 3, 4, 5 and 8.

Tips

To reproduce the count in a spreadsheet, use =NETWORKDAYS(start, end, holidays) in Excel or Google Sheets, where holidays is a cell range listing the dates to exclude. To move a deadline by business days, use =WORKDAY(base, n, holidays). Both functions skip weekends automatically but ignore holidays unless you pass the range — the same reason this page lets you load a holiday calendar.

For legal, court or contract deadlines, the counting rule can differ (some exclude the first day, some include the due date, some pause during recess). Use this as a general count and follow the rule that applies to your case.

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Frequently asked questions

What is the difference between business days and calendar days?
Calendar days count every day, including weekends and holidays. Business days count only weekdays that are not holidays. A 30-calendar-day period can be around 20 business days, depending on the dates and holidays inside it.
Does the calculator include state and city holidays?
It applies national holidays by default and lets you add state or regional holidays. City holidays are available for selected locations and expanding. Pick your country, and the state or city if it matters for your count.
Do optional or bank holidays count?
Only the holidays in the calendar you select are removed. Optional days that are not official holidays are not removed unless your calendar includes them, so check the rule that applies where you are.
How do I add 5 business days to a date?
Switch to Add, enter the base date and 5. The base date does not count: the tool returns the date of the 5th business day after it, skipping weekends and the holidays you loaded.
Does the count include the first and last day?
Between dates, both ends are included by default; turn on Exclude the start date to drop the first day. When adding or subtracting, the base date is never counted.
What happens when a holiday falls on a weekend?
A holiday on a Saturday or Sunday does not change the count, because the weekend is already excluded. The result lists only holidays that fall on weekdays.
Can I use this for legal or court deadlines?
Use it as a general count. Legal, court and contract deadlines can follow specific rules and suspensions; the official rule for your case prevails. Confirm on the relevant official channel.
centav.io Updated on

The centav.io editorial team. We write and review every calculator, cite the official sources behind each rule, and keep the update date in plain sight.

Sources: U.S. federal holidays — Office of Personnel Management, Federal holidays — 5 U.S.C. § 6103