Everyday
Business Days Calculator
Add a specified number of Monday-through-Friday business days to a starting date.
- Free to use
- Runs in your browser
- Level A · Standard formula
- Last reviewed 2026-08-16
Calculator guide
How to use the Business Days Calculator
Add a specified number of Monday-through-Friday business days to a starting date. Enter the requested values and select Calculate. The result and supporting values are produced locally in your browser.
Formula
Worked example
Adding 5 business days to a Monday returns the following Monday when no holidays are considered.
What to keep in mind
- This calculator excludes Saturdays and Sundays only.
- Public holidays and organization-specific closures are not automatically excluded.
Methodology
This calculator uses deterministic arithmetic and performs the calculation locally in your browser. Verify assumptions, units, and source values for your specific use case.
Review standard: Level A · Standard formula. How calculator reviews work.
Frequently asked questions
What does this calculator calculate?
Add a specified number of Monday-through-Friday business days to a starting date.
How is the result calculated?
Result Date = Start Date + N weekdays (Saturday and Sunday skipped).
Can I use the result for an important decision?
Use the result as a calculation aid and verify the inputs, assumptions, and applicable professional or regulatory requirements before relying on it for an important decision.
Does CalculateMeasure store the values I enter?
The calculator performs its arithmetic in your browser. The calculator itself does not need to send your entered values to a server to produce the result.