Date duration calculator
Compare two dates and get a full breakdown.
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Questions & answers
Is the end date included?
By default no: the count runs from the start of the first date to the start of the last, which is how most "days between" counts work. Tick "Include end date" to count both days, for example for an event that covers both dates.
How are business days counted?
Business days are Monday to Friday. Public holidays are not removed.
How are months counted?
Months are counted on the calendar, so January 31 to February 28 is 0 months and 28 days, and January 15 to February 15 is exactly 1 month.