Business Days Calculator
Count business days between two dates excluding weekends and custom holidays.
How to Use the Business Days Calculator
Select a start date and end date to count the number of business days (Monday through Friday) between them. Optionally add specific holiday dates to exclude from the count.
Use Cases
- Project timelines — estimate working days for delivery
- Payroll — count workdays in a pay period
- Shipping — calculate business day delivery windows
- Contract deadlines — determine business day cutoffs
Frequently Asked Questions
What counts as a business day?
Monday through Friday are counted as business days. Saturday and Sunday are excluded. You can also exclude custom holidays.
Are public holidays automatically excluded?
No. Public holidays vary by country and region. You can manually add specific holiday dates to exclude them from the count.
Does the start date count as a business day?
Yes. Both the start and end dates are included in the count if they fall on business days.
Is my data stored anywhere?
No. All calculations run entirely in your browser. No data is sent to any server.
More Date & Time
Date Difference Calculator
Calculate the exact difference between two dates in years, months, days, weeks, hours and minutes.
Open tool →Timezone Converter
Convert times between timezones instantly. Supports 28+ world timezones with DST handling.
Open tool →Countdown Timer
Set a target date and time, then watch a live countdown showing days, hours, minutes and seconds.
Open tool →Stopwatch
Precise online stopwatch with start, stop, reset and lap time recording. Centisecond accuracy.
Open tool →Pomodoro Timer
25-minute work and 5-minute break cycles with progress bar, session counter and phase tracking.
Open tool →Week Number Calculator
Find the ISO week number, day of year, days remaining, quarter and more for any date.
Open tool →