Date & Time calculator
Work Days Calculator
Calculate business days between two dates excluding weekends.
About the work days calculator
The work days calculator counts business days between two dates, excluding weekends and optionally subtracting holidays.
How to use this calculator
- 1
Enter date range
Select start and end dates.
- 2
Enter holidays
Enter the number of holidays to exclude.
- 3
View results
See total business days available for work or project planning.
How the calculation works
Count all weekdays between dates, then subtract holidays.
Example: Jan 1 to Jan 31 (2024) with 1 holiday = 21 business days.
How date calculations work
Calendar math is trickier than it seems. Months have 28–31 days, leap years add an extra day every four years (except century years not divisible by 400), and time zones complicate exact hour counts. Our calculators use UTC-based date arithmetic to ensure consistent results regardless of your local time zone.
Important limitations
This tool provides a mathematical estimate based only on the values entered. It does not account for regulations, taxes, lender fees, market conditions, or individual circumstances. Results are for planning purposes only — consult a qualified professional for regulated, medical, financial, or construction decisions.
Frequently asked questions about work days calculator
How accurate is the work days calculator?+
The calculation follows the displayed formula and retains full numeric precision before formatting the result.
Can I use the result professionally?+
Use it as a planning estimate. Confirm regulated, medical, financial, or construction decisions with a qualified professional.