Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Add a number of business days to a date, skipping weekends.
2026-01-15
This calculator adds (or subtracts) a number of business days to a start date, skipping weekends automatically -- the inverse of the Business Days Calculator, answering "what date is 10 business days from now" instead of "how many business days are between these two dates."
Enter a start date and the number of business days to add (use a negative number to go backward). The result shows the resulting date and its day of the week.
The tool steps forward (or backward) one calendar day at a time, only counting a day toward the total if it's a weekday, until the requested number of business days has been added. This correctly lands on a weekday even when the count spans multiple weekends.
Adding 1 business day to Friday, January 9, 2026 lands on Monday, January 12, 2026 -- the weekend is skipped entirely.
To count business days between two already-known dates instead of projecting forward, use the Business Days Calculator. For a business-day deadline that starts from today, see the Deadline Calculator.
Start on Wednesday, January 7, 2026 and add 10 business days. Counting forward: Jan 8 is 1, Jan 9 is 2, then the weekend is skipped, Jan 12 is 3, Jan 13 is 4, Jan 14 is 5, Jan 15 is 6, Jan 16 is 7, the next weekend is skipped, Jan 19 is 8, Jan 20 is 9, and Jan 21 is 10. The result is Wednesday, January 21, 2026, which is 14 calendar days later. Ten business days is therefore two work weeks, or two calendar weeks in this case.
Going backward works the same way. From Monday, January 12, 2026, subtracting 1 business day gives Friday, January 9, because the weekend is skipped. Subtracting 5 gives Monday, January 5.
If the start date is a Saturday or Sunday, counting still begins from the next day in the chosen direction, and only weekdays are counted. So starting on Saturday, January 10, 2026 and adding 1 business day gives Monday, January 12. Starting on Sunday and adding 1 gives the same Monday. That is a useful detail when an order is placed over the weekend, because the first business day counted is Monday and not the weekend day itself.
Adding 0 business days returns the start date. Large numbers work fine: 60 business days is 12 work weeks, which is around 84 calendar days when no holidays fall in the range. If you enter a large value, the weekday shown in the result is a quick check that you did not mistype.
Since holidays are not skipped, adjust manually. Compute the result, then list weekday holidays that fall between the start date and the result. For each one, add one more business day and recheck, because extending the range might pull in another holiday. Repeating until no new holiday falls in the window gives you the true date. Confirm the holiday list with your employer, carrier, or agency.
For legal or regulatory deadlines, verify the counting method with the governing document or a professional.
No -- like the Business Days Calculator, it skips weekends only, not holidays, since holiday calendars vary by region and employer.
Yes -- enter a negative number to count business days backward from the start date.
No -- the count begins from the day after the start date (or before it, when subtracting), matching how "N business days from today" is normally understood.
It counts from the next day in the chosen direction and only tallies weekdays, so the first business day after a weekend start is Monday.
Subtract one from your business day count, since the tool begins counting from the day after the start.
When you add or subtract at least one business day, yes. With zero, the result is your start date, which could itself be a weekend day.
No. Use the Business Days Calculator to count weekdays between two known dates.
Reference: U.S. Department of Labor