Date Duration Calculator – Find Days Between Dates

Date Duration Calculator

Calculate the exact number of days between any two dates quickly and easily.

Date Duration Calculator

Enter two dates to find the number of days between them.

Start Date:

Please select a valid start date

End Date:

Please select a valid end date

Duration Result

0 days

There are 0 days between the selected dates.

Including start date:

Including end date:

Total weeks:

Total months (approx):

Total years (approx):

How to Use the Date Duration Calculator

Our date calculator is simple to use and provides accurate results in seconds:

Select the Start Date – Click on the first date field and choose your starting date from the calendar.
Select the End Date – Click on the second date field and choose your ending date from the calendar.
Calculate – Click the “Calculate Duration” button to find the number of days between your selected dates.
View Results – The calculator will instantly display the number of days between the two dates, along with additional details about the duration.

Note: The calculation includes both the start and end dates in the total (inclusive counting). For example, if you calculate from January 1 to January 3, the result will be 3 days.

Benefits of Using Our Date Calculator

Our date duration calculator offers numerous advantages for personal and professional planning:

Project Planning – Easily determine project timelines and deadlines by calculating the exact number of days available.
Event Planning – Find out how many days until a wedding, vacation, or important event.
Age Calculation – Calculate exact age in days from a birth date to the current date or any other date.
Contract Terms – Determine the exact duration of contracts, agreements, or rental periods.
Pregnancy Planning – Calculate due dates or weeks between pregnancy milestones.
Savings Goals – Plan savings or debt repayment by understanding day counts between now and target dates.
Quick Reference – Get immediate results without complex manual calculations.
Mobile-Friendly – Use on any device, anytime you need to calculate days between dates.

Common Date Calculation Examples

Here are some practical examples of how our date calculator can be used:

Age in Days

To calculate your exact age in days, enter your birth date as the start date and today’s date as the end date.

Example: If your birthday is January 15, 1990, and today is March 16, 2025, you are 12,853 days old.

Days Until an Event

Find out how many days remain until an important event by entering today’s date as the start date and the event date as the end date.

Example: If today is March 16, 2025, and your wedding is on December 31, 2025, there are 290 days until your wedding.

Project Timeline

Calculate the duration of a project by entering the project start and end dates.

Example: If your project starts on April 1, 2025, and ends on June 30, 2025, the project duration is 91 days.

Frequently Asked Questions

Does the calculator include both the start and end dates?

Yes, our calculator uses inclusive counting, which means both the start date and end date are included in the total. For example, from January 1 to January 3 is counted as 3 days.

Can I calculate days between dates in different years?

Absolutely! Our calculator can determine the number of days between any two dates, regardless of how far apart they are in time. It correctly accounts for leap years and varying month lengths.

How accurate is the date calculator?

Our date calculator is highly accurate and follows standard calendar rules, including proper handling of leap years. The results are calculated using precise date arithmetic.

Can I calculate backward in time?

Yes, you can enter an end date that is earlier than the start date. The calculator will still provide the correct number of days between the two dates, showing a positive number.

Does the calculator work on mobile devices?

Yes, our date calculator is fully responsive and works seamlessly on smartphones, tablets, and desktop computers.

Date Duration Calculator