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Calculate the number of days between two dates, or add/subtract days from any date. Shows business days, weeks, and months too.
Calculate the exact number of days between any two dates, or add and subtract days from a date — no signup, no ads. Shows total days, business days (weekdays), weeks, months, and years between dates. Perfect for project planning, deadline tracking, age verification, or counting down to events. All calculations run in your browser.
Yes. The calculator shows both total calendar days and business days (Monday through Friday, excluding weekends). It does not account for public holidays, which vary by country.
Yes. Use the "Add/Subtract Days" section to add or subtract any number of days from a starting date. It shows the resulting date and what day of the week it falls on.
Yes. February 29 is correctly handled in leap years. The calculator uses JavaScript's built-in Date object which handles all calendar edge cases.
The calculator works for any date supported by your browser, typically from year 0001 to 9999. It handles historical and future dates correctly.