UsefulTool4You
DATE & TIME TOOL

Date Duration Calculator

Calculate the exact number of days between two dates. Find date difference in years, months, weeks and days with a simple online date calculator.

DATE DIFFERENCE TOOL

Select Your Dates

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Start Date

End Date

CALCULATION RESULT

Date Difference

📅
TOTAL NUMBER OF DAYS—days between selected dates
Exact Calendar Duration—
Total Months—
Weeks—

Choose two valid dates and calculate to view the complete duration. The end date is excluded unless you select the include option.

Detailed Date Difference

View the time between your selected dates in different units, including total days, calendar months, weeks, hours, minutes and seconds.

Calendar Difference—years, months and days
Total Months—complete calendar months
Total Weeks—weeks and remaining days
Total Hours—calculated from total days
Total Minutes—calculated from total days
Total Seconds—calculated from total days
Select a start date and an end date, then click Calculate Duration to see the complete result.

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QUICK GUIDE

How to Calculate Days Between Two Dates

Find the exact date difference in three simple steps.

  1. Select the start date.Open the calendar and choose the date from which you want to start counting.
  2. Select the end date.Choose the second date. Use the month and year selectors to move to another calendar period.
  3. Calculate the date difference.View total days, calendar years and months, weeks, hours and other time units. Include the end date if needed.
DATE CALCULATOR GUIDE

Frequently Asked Questions

How do I calculate the number of days between two dates?

Choose a start date and an end date in the calendar picker, then select Calculate Duration. The calculator shows total days and the calendar difference in years, months and days.

Can I calculate the date difference in years and months?

Yes. The date duration calculator displays the calendar difference in years, months and days, along with total months and weeks.

Does the calculator include the end date?

Yes. Select the Include end date option to add the ending date as one additional day to the total duration.

Can I use this date calculator for past and future dates?

Yes. Use the calendar month and year selectors to choose dates in the past or future, then calculate the duration between them.

Is the online date duration calculator free?

Yes. The UsefulTool4You date duration calculator is free to use online and does not require an app installation.