Days between dates
Count the days between two dates, with an optional inclusive end date.
Calendar days, not business days or a legal deadline calculation.
How this works
UTC-midnight timestamps for the two valid Gregorian dates are subtracted and divided by 86,400,000. The default excludes the end date; inclusive mode adds one day. Reverse order is displayed as an absolute interval.
An example
October 1 to October 3 is 2 elapsed days, or 3 days when both dates are included.
Good to know
Does it count business days?+
No. All calendar days are counted, including weekends and holidays.
Does daylight saving affect the result?+
No. UTC-midnight arithmetic avoids 23-hour or 25-hour local-day differences.
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