Date Calculator
Calculate days between dates or add/subtract days from a date.
Total Days
0
Weeks + Days0 weeks, 0 days
Approx. Months0 months
Approx. Years0 years
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Frequently Asked Questions
How do I calculate the number of days between two dates?
Subtract the earlier date from the later date. The difference in milliseconds divided by 86,400,000 (ms per day) gives you the number of days. This calculator does that automatically.
Does the date calculator include or exclude the end date?
This calculator counts the number of days between the two dates, not including either the start or end date. To include both endpoints, add 1 to the result.
How are leap years handled in date calculations?
JavaScript's Date object automatically accounts for leap years, so any date difference calculated here correctly handles February 29th and leap years.