Date Calculator
Days between dates, calendar offsets, D-day countdown and business days with custom holidays.
Days between dates
The end date is included; the start date is excluded unless selected. Dates can be entered in either order.
Calendar days
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Add or subtract days
Use a negative number to subtract days.
Resulting date
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D-Day
D- means days remaining; D+ means days since the target date.
Countdown
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Business days
The end date is included. Public holidays are not loaded automatically. Enter YYYY-MM-DD dates separated by spaces, commas, semicolons or new lines.
Business days
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How it works
Days between dates, calendar offsets, D-day countdown and business days with custom holidays.
Business days subtract weekend days and unique custom holidays on working days. Holiday and weekend totals never count a date twice. Calendar months use month-end clamping.
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