How to calculate days between two dates?

Enter the start and end dates, click calculate to get the day difference. Results include total days, weeks, months, years, weekends, and workdays.

How does date add/subtract work?

Choose a base date, enter the amount to add or subtract (negative for subtract), select the unit (days/weeks/months/years), and click calculate.

Yes. The workday mode automatically excludes Saturdays and Sundays, calculating only business days between two dates.

All-in-one date & time calculator: date difference, add/subtract, time difference, workdays. Everything you need for date calculations.

Daily · Practical

Start Date

Select start date

End Date

Select end date

Start Time

Select start datetime

End Time

Select end datetime

Calculates the total days between two dates, with week/month/year approximations, plus weekend and workday breakdowns.

Add or subtract days, weeks, months, or years from a base date to get the target date and day of week.

Precise time difference in seconds, minutes, hours, and formatted breakdown (days, hours, minutes, seconds).

Counts business days between two dates, automatically excluding Saturdays and Sundays.