Business Days Calculator – Count Working Days Between Dates
Count the number of working/business days between two dates, excluding weekends and holidays. Perfect for project planning and deadline calculations.
How to Use This Business Days Calculator
Select your start date
Choose the beginning date of your period. This can be today, a project start date, or any date in the past or future.
Select your end date
Choose the ending date. The calculator counts all business days from start through end, inclusive of both dates.
View business days and total days
The result shows business days (Monday-Friday) and total calendar days. Use this for project timelines, delivery estimates, and deadline planning.
Business Days Reference Guide
| Period | Total Days | Business Days | Weekend Days |
|---|---|---|---|
| 1 Week | 7 days | 5 days | 2 days |
| 2 Weeks | 14 days | 10 days | 4 days |
| 1 Month (avg) | 30 days | 21-22 days | 8-9 days |
| 1 Quarter | 90 days | 64-65 days | 25-26 days |
| 1 Year | 365 days | 260-261 days | 104-105 days |
Business days exclude Saturdays and Sundays only. Actual working days may be fewer due to public holidays. A typical year has 260-261 weekdays.
Understanding Business Days
What Counts as a Business Day?
Business days are Monday through Friday, excluding weekends. In most countries, these are the standard working days when banks, government offices, and businesses operate. Saturday and Sunday are not business days in most of the world.
Why Business Days Matter for Deadlines
Many contracts and agreements specify business days, not calendar days. A 10 business-day deadline gives you two full weeks. A 10 calendar-day deadline could include two weekends, giving only 6-7 actual working days. Always clarify which type of days apply.
Holidays Are Not Automatically Excluded
This calculator counts only weekends, not public holidays. For precise project planning, manually subtract holidays that fall within your period. Different countries and regions have different holiday schedules.
International Considerations
Weekend days vary by country. Most Muslim-majority countries use Friday-Saturday or just Friday as weekend days. Israel uses Saturday (Sabbath) as the primary non-working day. Adjust your calculations for local customs when working internationally.
Tips for Project Planning
Always Specify Business Days in Contracts
When setting deadlines, use business days to avoid ambiguity. "15 business days" is clearer than "3 weeks" and accounts for varying month lengths.
Account for Holiday Seasons
December and other holiday periods have multiple non-working days. A 2-week deadline spanning Christmas may effectively become 3-4 weeks. Build buffer time around major holidays.
Consider Time Zones for International Work
A deadline of "end of business day" means different times across time zones. Specify the time zone or use UTC to avoid confusion when working with international teams.
Use Business Days for Shipping Estimates
Most carriers ship only on business days. A "3-day shipping" service typically means 3 business days. Order before the weekend to avoid unexpected delays.
Frequently Asked Questions
Does this calculator include holidays?
No, this calculator only excludes weekends (Saturday and Sunday). Public holidays vary by country, state, and even city. For accurate planning, manually subtract holidays that fall within your date range.
Are both start and end dates included?
Yes, the calculator includes both the start date and end date in the count. If you start on Monday and end on Friday of the same week, that's 5 business days, not 4.
How many business days are in a year?
A typical year has 260-261 business days (52 weeks x 5 days). Leap years and the day of the week January 1st falls on can shift this by one day. Subtract holidays for actual working days.
What if my weekend is different?
This calculator uses the standard Monday-Friday workweek. If your region uses a different weekend (like Friday-Saturday in some Middle Eastern countries), you'll need to adjust the results accordingly.
Can I calculate business days in the past?
Yes, the calculator works for any date range, past or future. This is useful for calculating how many business days elapsed between two historical dates or for timesheet purposes.
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