Date Difference Calculator
Find the number of days between two dates.
Pick two dates
About the Date Difference Calculator
How many days until a deadline, or since an event? This calculator counts the days between two dates and also shows the result in weeks and approximate months, which helps with planning projects, trips, notice periods and anniversaries.
How to use the Date Difference Calculator
- Choose the From date.
- Choose the To date.
- Read the number of days, plus the weeks and approximate months.
Good to know
- The order of the dates does not matter. The tool always shows the positive difference.
- Months are an approximation, using an average month length of about 30.44 days.
- The count is the number of full days from one date to the other, so a date and the next day are one day apart.
Frequently asked questions
Does it include both the start and end date?
No. It counts the days between them, so the same date twice is 0 days and consecutive dates are 1 day. Add one if you want to include both days.
Does it handle leap years?
Yes. The calculation uses real calendar dates, so leap days are included.
Can I count working days only?
Not in this version. It counts every calendar day.