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Working days calculator

Count the business days between two dates, or find the date that many working days away.

Days off and holidaysWeekly days off: Saturday and Sunday. Holidays: none.Change

Weekly days off

Dark days are days off. Press a day to switch it.

One per line as YYYY-MM-DD, with a label after the date if you like. A range works too: 2026-12-24 to 2026-12-31. This calculator does not know public holidays, so enter the ones that apply to you.

Up to 1,000 characters.

Working days between two dates

Counts the days that are not a weekly day off or a holiday. Both dates count unless you switch them off.

Enter both dates to count the working days.

Add or subtract working days

Finds the date that many working days away. The start date itself is never counted. Leave it empty to start from today.

Enter a number of working days to see the date.

At a glance

What it does
Counts the working days between two dates, or adds and subtracts working days from a date.
Days off
Saturday and Sunday by default. Pick any weekly days off, such as Friday and Saturday, or none at all.
Holidays
You enter them, one per line or as a range. The calculator knows no public holidays, so it never guesses.
Counting
Both dates count by default, like NETWORKDAYS in a spreadsheet, and either end can be left out. Adding does not count the start date, like WORKDAY.
Overlaps
A holiday that falls on a weekly day off is not counted twice.
Limits
Up to 36,500 working days to add or subtract, and up to 5,000 holiday days in the list.
Privacy
Nothing is sent when you type. Your entries are kept in the page address so a link can be shared, so a shared link carries them.

How to do it

  1. 1

    Set your days off and holidays

    Open Days off and holidays. Dark buttons are days off. Type holidays as YYYY-MM-DD, one per line, or pick a date and press Add.

  2. 2

    Count between two dates

    Pick a start and an end date in the first box. Switch the start or end off if it should not count.

  3. 3

    Or add working days

    In the second box enter a start date (empty means today) and a number of working days, then choose Add or Subtract.

  4. 4

    Read the answer and the working

    The working shows the calendar days, the days off taken away and the holidays skipped, so you can check each figure.

What counts as a working day here

A working day is any day that is neither one of your weekly days off nor a holiday you entered. With the defaults that means Monday to Friday. A holiday that falls on a weekly day off is not taken away twice, so a holiday on a Saturday does not change a count that already skips Saturdays.

Where a holiday is observed on a different day from its date, enter the day you actually have off. A range such as 2026-12-24 to 2026-12-31 covers a shutdown without typing every day.

Counting between dates and adding days are different questions

When you count between two dates, both dates are counted by default, so Monday March 4 to Friday March 8, 2024 is 5 working days. Switch off the start or end date if it should not count: leaving out the start gives 4. This matches how the NETWORKDAYS function in Excel and Google Sheets counts.

When you add working days, the start date is never counted, matching the WORKDAY function in spreadsheets. 5 working days after Monday March 4 is Monday March 11: Tuesday to Friday make 4, and the weekend is skipped. 0 working days after a date is that date itself, even if it is a day off.

Weekends and holidays are not the same everywhere

In some countries the weekend is Friday and Saturday rather than Saturday and Sunday, and some workplaces run a six or seven day week. Set your own days off with the buttons, or use the presets. Public holidays differ by country and often by region, and employers add their own, so the list here is always yours. A calendar year has between 260 and 262 weekdays before any holidays are taken away.

Business days, delivery times and deadlines

Words like business day mean different things in different places. A carrier may count Saturday, a bank has its own calendar, a contract may start counting the day after notice is given, and a court may move a deadline that falls on a day off. This calculator follows the rules you set here and cannot know the rules of a particular contract, carrier or court. Read the wording that applies to you and use the start and end switches to match it.

To count every day without skipping any, see the date difference calculator. To add months or years, use the add and subtract calculator.

Questions people ask

How do I calculate working days between two dates?

Count all the days, take away the weekly days off, then take away holidays that fall on working days. March 1 to April 1, 2024, counting both dates, is 32 calendar days. Ten are Saturdays or Sundays, so there are 22 working days. In a spreadsheet the same count is NETWORKDAYS(start, end, holidays).

Does it include the start and end dates?

By default yes, both. There is a switch for each in the first box, because wording differs: a promise of delivery within 3 working days often runs from the day after the order, for example. The line under the answer says which dates were counted, for example "Counting both dates."

How do I add business days to a date?

Use the second box. Enter the start date, or leave it empty for today, type the number of working days and keep Add selected. The start date is not counted, so 1 working day after a Friday is the next Monday. Choose Subtract to go back.

Does the calculator know public holidays?

No, and it does not guess. Holidays vary by country, region and employer, and a wrong built in list would give wrong answers. Enter the days off that apply to you under Days off and holidays. A line that is not a date gives a message instead of being skipped, so a typing mistake cannot quietly change the count.

How do weekends and holidays interact?

You can set any weekly days off, such as Friday and Saturday, or none for a seven day week. A holiday on a day that is already a weekly day off is not counted twice. If every day of the week is switched off, there are no working days and the calculator says so.

Is anything I type stored or sent?

No. Typing sends nothing anywhere: the sums run in your browser. Your dates, days off and holidays are also kept in the page address so that Copy link works. That means a link you share, or a page you reload, requests that address, entries included, from our server like any web address. Share a link only if you are happy to share what you entered.

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