Use the actual calendar, not an average
September 2026 contains 22 Monday–Friday dates. At eight hours per day, that is 176 scheduled hours. If September 7 is a closure for your organization, the remaining 21 days give 168 hours. The calculator starts with no closures so that you can apply your own calendar.
How the total is calculated
Count dates in the selected month whose weekday is checked. Remove each matching closure once. Multiply the remaining working days by daily hours. The CSV lists every date as working, closure or rest, allowing a manager to check why a day contributes zero hours.
Both the first and last dates of the month are considered. Leap years are handled by the calendar. There is no fixed 160-hour assumption, and an average such as 173.33 hours does not override the actual dates.
From individual hours to a team plan
For people with identical schedules, multiply one person’s result by the number of people. Run separate calculations for different daily hours or working weekdays. Then subtract individual absences separately; a company closure is not the same as one employee taking leave.
Use business days between dates for a range spanning several months. Read actual monthly hours versus annual averages before using the figure in payroll or staffing.
Frequently asked questions
How many work hours are in a month?
It depends on the month, working weekdays, daily hours and closures. Twenty-two scheduled days at eight hours equal 176 hours before closures or individual absences.
Are public holidays deducted automatically?
No. Enter the closure dates that apply to your organization. A public holiday and an employer closure are not always the same thing.
Will a Sunday closure reduce a Monday–Friday schedule?
No. Only a closure on a selected working weekday reduces the total. Duplicate dates are counted once.
Can I use a four-day workweek?
Yes. Select the four working weekdays and enter the scheduled hours per day. This model assumes the same hours on each selected day.
Is this my paid-hours total?
Not necessarily. This is scheduled capacity after closures. Paid holidays, paid leave, overtime and payroll rules require a separate payable-hours calculation.