Date Difference Calculator

Find how many days, weeks, months and years are between two dates.

Dates use your browser’s date picker.
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Days
Days
Weeks
Years, months, days
Weekdays
Hours and minutes
Dates

Saved Calculations

Items you add are saved in this browser.

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How to Count Days Between Dates

Subtract the start date from the end date. By default the start date isn’t counted (like counting nights in a hotel stay); choose "include both days" to count every calendar day.

Days = end − start (+ 1 to include both)   Weeks = days ÷ 7

Worked Example

Tips

Weekdays here are Monday through Friday with no holidays removed; the business days calculator can skip US federal holidays. Time zones and daylight saving time don’t affect whole-day counts on this page.