DateUtils

Add Business Days Calculator

Find the date that falls a number of working days after (or before) a start date, skipping weekends and any holidays you enter.

Date format follows your device settings. The starting date is not counted.
Operation
A whole number, up to 100,000
Working days
Untick days that are not working days, or tick Saturday or Sunday for a different working week.
One date per line as YYYY-MM-DD. Only holidays that fall on a working day change the result. No public holidays are assumed.

Calculated in your browser. Nothing you enter is sent to a server.

Choose a starting date and a number of business days to find the resulting date.

Understanding the result

The result is the date on which the last of your counted working days falls. The figures beneath show how many calendar days that spans and how many weekend days and holidays were skipped along the way.

What is a business days adder?

It answers "what date is 10 working days from now?". People use it for delivery windows, response deadlines, notice periods and payment terms stated in business days.

It is the counterpart of the Business Days calculator, which counts the working days between two dates.

How it works

Starting from the day after the start date, the tool steps forward one calendar day at a time (or back, if you choose Subtract). A day counts only if it is one of your working days and is not in your holiday list. It stops when it has counted the number of working days you asked for.

The start date itself is never counted. Adding 1 business day to a Friday gives the following Monday. Adding 0 returns the start date unchanged, even if that day is a weekend.

Holidays are entered as YYYY-MM-DD dates. No holidays are assumed automatically.

Examples

Friday plus one business day

Friday 5 January 2024 plus 1 business day is Monday 8 January 2024. Two weekend days are skipped.

Ten business days

Monday 1 January 2024 plus 10 business days is Monday 15 January 2024: two full working weeks later.

With holidays

Tuesday 24 December 2024 plus 1 business day, with 25 and 26 December listed as holidays, is Friday 27 December 2024.

Things to keep in mind

  • If the start date is not a working day, counting begins from the next working day. The tool tells you when this happens.
  • Whether a deadline "in 5 business days" includes the start date depends on the agreement. This tool does not count the start date; count from the day after.
  • Local holidays, bridge days and company closures only affect the result if you add them.
  • The number of business days is limited to 100,000.

Frequently asked questions

How do I add business days to a date?

Enter the starting date, choose Add, enter the number of business days and, optionally, your holidays. The result is the date those working days end on.

Can I subtract business days?

Yes. Choose Subtract to move backwards through working days.

Does the start date count as the first business day?

No. Counting starts from the next day, so 1 business day after a Friday is Monday.

What if the result lands near a holiday?

Add the holiday to the list and the tool skips it, moving the result to the next working day.

Business Days Count the working days between two dates, excluding weekends and holidays you choose. Add or Subtract Days Add or subtract days, weeks, months or years from any date. Date Difference Calculate the exact difference between two dates in days, weeks, months and years. Day of the Week Find out which day of the week any date falls on.