About the Working Days Calculator
Working Days Calculator counts only the days on which people work. It has two jobs. Days between takes two dates and tells you how many working days lie between them, with the number of weekly days off and holidays that were skipped. Date from days starts from a date and adds or subtracts a number of working days to give the resulting date, which is what you need for delivery times, notice periods and payment terms. Choose which days of the week are off, including Friday and Saturday for regions with that weekend, and paste a list of your own holidays. The end date can be counted or left out. Everything is calculated in your browser and nothing you type is sent anywhere.
Updated September 2026
How to use the Working Days Calculator
- 1Choose Days between or Date from days.
- 2Pick the start date, then the end date or the number of working days.
- 3Select your weekly days off: Saturday and Sunday, Friday and Saturday, Sunday only or none.
- 4Optional: paste holidays, one date per line as YYYY-MM-DD.
- 5Read the result and copy it if you need it.
Why working days matter
Many deadlines are written in working days rather than calendar days. Delivery may take 5 working days, a notice period may run for 20, a bank transfer may clear in 3 and a legal response may be due in 14. Counting these on a calendar by hand is slow and it is easy to slip over a weekend or a public holiday.
Because the tool takes weekends and your list of holidays into account, it answers in seconds and shows the weekday of the date it finds, so you can double-check the result against a wall calendar.
Two ways to use it
- Days between: enter a start and an end date to see how many working days fall in between.
- Date from days: enter a start date and a number of working days to see the date it ends on.
- Use After the start for deadlines and Before the start to find when something had to begin.
Weekends, holidays and edge cases
Not every country has a Saturday and Sunday weekend. Several places use Friday and Saturday, and some shops or factories only close on Sunday. Choose the pattern that fits, and use the holiday box for public holidays, company closures or bridge days.
When a holiday lands on a weekend it is counted as a weekend day, so it does not remove another working day. The start day is not counted when you look for a date, so the result of adding one working day to a Friday is the following Monday. If you want to include the start day, subtract one from your number.
Related tools
Date Calculator adds calendar days, weeks, months and years to a date. Days Between Dates counts every day, Hours Calculator adds up hours worked across shifts, Salary Calculator turns pay into different periods and Age Calculator finds exact age from a birth date.
Features
- Working days between two dates
- Date after or before a number of working days
- Four weekend choices, including Friday and Saturday
- Holiday list you paste in
- Option to count or skip the end date
- Counts of weekend days and holidays skipped
- Full date with weekday
- Runs in your browser
Frequently asked questions
How many working days are between two dates?
Choose Days between, pick both dates and the tool counts every day that is not a weekly day off or a listed holiday. Counting Monday to Friday of one week with the end date included gives 5. With the end date left out it gives 4.
Does it include the start and end date?
The start date is always counted when you count between dates. The end date is counted when the box is ticked, which is the usual way to measure the length of a project. Untick it if you want the number of full days that pass before the end date.
How do I find the date 10 working days from today?
Choose Date from days, keep the start date on today, enter 10 and leave After the start selected. The start day is not counted, so 10 working days from a Monday with Saturday and Sunday off is the Monday of the week after next.
How do I add holidays?
Type or paste dates into the holidays box, one per line, in the form 2026-12-25. Commas and semicolons also separate dates. A holiday that falls on a weekend is counted only once, as a weekend day, so it does not remove an extra day.
Can I use a Friday and Saturday weekend?
Yes. Pick Friday and Saturday under days off. There is also a Sunday-only choice and one with no weekly days off, which turns the tool into a plain day counter that only skips your holidays.
Are public holidays included automatically?
No. Holidays differ by country, region and sometimes by company, and some move from year to year, so the tool relies on the dates you enter. Check your government or employer calendar and paste them in.
Is a working day the same as a business day?
For this tool, yes: a day that is not a weekly day off and not a listed holiday. Banks and couriers may use slightly different rules, such as not counting a Saturday as a delivery day, so check the terms of your contract.