Enter a start and end date & time to see totals here.
FAQ
How is the date difference calculated?
We normalise each input to local noon to avoid daylight-saving shifts, then compute the gap. Selecting “Include the start date” keeps the first day in the total.
What counts as a business day?
When you enable business days, any weekday you mark as a weekend and any dates in the holiday list are removed from the count. Official national calendars will be offered later as presets.
How are working hours calculated?
The tool intersects your selected working-hours window with each business day between the start and end times. Time that falls outside the window is ignored automatically.
How are years, months, and days derived?
We advance the end date by one day (when inclusive) and subtract the calendar components to reflect a true year–month–day difference.
Inclusive vs exclusive difference?
Inclusive mode counts the first day when the dates differ; exclusive mode does not. Toggle the option to match your reporting needs.
Do time zones or DST affect results?
We normalise inputs to local noon to avoid DST boundaries. Business‑day counting ignores public holidays unless you add them to the list.