Calculate the total business hours between a start and end date and time, counting only Monday through Friday within your chosen daily working-hours window.
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This tool steps through each calendar day between your start and end date and time. For every Monday through Friday, it finds the overlap between your chosen daily working-hours window (for example, 9:00 AM to 5:00 PM) and the actual start/end range, then adds up the overlapping minutes across all days.
Weekends are skipped entirely, and any time before the business day starts or after it ends on a given day doesn't count, so a request submitted at 6:00 PM on a Friday and answered at 10:00 AM the following Monday would only count the time from 9:00 AM to 10:00 AM Monday, not the entire weekend.
A request submitted Friday, August 7, 2026 at 6:00 PM and resolved Monday, August 10, 2026 at 10:00 AM, with a 9:00 AM to 5:00 PM business window, comes out to exactly 1 business hour across 1 business day, the entire weekend plus the after-hours portion of Friday evening is excluded, leaving only Monday's 9:00 AM to 10:00 AM window.
Expecting time outside the business hours window to count toward the total, as the worked example shows, evenings, nights and weekends are entirely excluded, only time falling within your specified daily window on a weekday counts.
Using this when you actually just need whole business days counted, not elapsed hours within a window, the simpler Working Days Calculator is the better fit for that use case.
Setting a business hours window that doesn't match your actual support or operating hours, the accuracy of this calculation depends entirely on entering the real window your business or team operates within.
Yes, only Monday through Friday are counted as business days. Any time falling on a Saturday or Sunday is excluded from the total.
Yes, enter any start and end time for your business day. The calculator only counts elapsed time that falls within that window on each business day.
The Working Days Calculator counts whole business days between two dates. This tool goes a step further and calculates actual elapsed hours within a working-hours window, accounting for partial days at the start and end of the range.
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