Business Days Calculator: instructions, examples and limits
Counts Monday–Friday after the start date through the end date, subtracting unique supplied weekday holidays.
Open Business Days CalculatorThis tool is registered for local processing. Its tool input is handled in the current page; LittleKit’s product analytics do not include the input value.
What it does
Counts Monday–Friday after the start date through the end date, subtracting unique supplied weekday holidays.
Use Business Days when a weekday count is needed and you know which holidays should be excluded from the interval.
How to use it
- 1
Enter the start and end dates and decide whether the boundary convention matches your question.
- 2
Add the relevant holiday dates, one per line, if the schedule excludes them.
- 3
Read the count and document the supplied holiday list alongside the result.
Worked example
Friday to Monday → 1 business day, unless Monday is an excluded holiday.
The example demonstrates the operation. For file-based tools, results depend on the selected file and options.How the result is produced
Counts Monday–Friday after the start date through the end date, subtracting unique supplied weekday holidays.
Important limits
No country holiday calendar is assumed. Start date excluded, end date included. UTC date-only calculation.
Checks before sharing or relying on the result
- Saturday and Sunday are excluded; public holidays are not guessed from your location.
- A holiday list is de-duplicated and applied to weekdays in the selected interval.
- Contracts can define “business day” differently, so follow the governing document for consequential deadlines.
Choosing the next step
Use a calendar-date tool when the question is about dates on a page, and a duration tool when elapsed clock time matters. For a deadline across time zones, convert the times explicitly before relying on a local-device result.
See a mismatch between these instructions and the tool? Report a correction with a non-sensitive example.