Add-Subtract Workdays
Find a future or previous date after moving a specified number of working days.
How to use the Add/Subtract Workdays
- Enter start date, direction, number of workdays, weekend pattern and optional holidays.
- Review the values before calculating, especially whether the starting date should be counted under the policy you are applying.
- Select Calculate to find a date after moving forward or backward by business days.
- Correct the inputs if the result looks unexpected; a common source of error is forgetting to enter a local holiday that falls inside the calculation period.
What this calculator does
Find a future or previous date after moving a specified number of working days. Its calculation is driven by start date, direction, number of workdays, weekend pattern and optional holidays. The output is intended to find a date after moving forward or backward by business days, while workplace rules and source records remain external to the calculator.
Date and planning results use the weekend, holiday, schedule and time assumptions entered on the page. Confirm organization-specific calendars before relying on a deadline or roster date.
Workday counting skips excluded calendar dates
Moving ten workdays is not the same as adding ten calendar days. The calculator advances or reverses through the calendar while skipping the weekend pattern and holiday dates you provide. Check the organization calendar when the target date matters.
Calculation example
Example input: Add 10 workdays to a Monday with a Saturday-Sunday weekend
Example result: A result date two workweeks later, adjusted for entered holidays.
Your result will change with start date, direction, number of workdays, weekend pattern and optional holidays; check whether the starting date should be counted under the policy you are applying before comparing it with another system.
How to interpret the result
Verify whether the starting date should be counted under the policy you are applying, and do not rely on the result if you may be forgetting to enter a local holiday that falls inside the calculation period.
Practical checks before using the result
- Verify the key assumption: whether the starting date should be counted under the policy you are applying.
- Avoid a common error: forgetting to enter a local holiday that falls inside the calculation period.
Calculation design and testing notes are documented in the Calculator Methodology and Accuracy Policy.