Date Difference Calculator

Date Difference Calculator Date Utility

Select Dates

Start Date

End Date

Include end date

Count both the start and final date when enabled.

You can enter the dates in either order. The calculator will identify which date comes first.

Date Difference

Exact Calendar Difference -

Total Days -

Weeks + Days -

Completed Months -

Date Order -

Start

Duration

End

Quick Guide

How to Calculate the Difference Between Two Dates

Enter your start date and end date to calculate the exact calendar duration and total number of days.

1 Select Start Date Choose the first date in your calculation.

2 Select End Date Choose the second date you want to compare.

3 Choose Counting Method Enable inclusive mode if the end date should count.

4 View Duration See years, months, days, weeks and total days.

Understanding Results

Exact Calendar Difference vs Total Days

Both results describe the same period, but in different ways.

Calendar Difference 1 Year, 2 Months, 5 Days

Shows the duration using calendar years, calendar months and remaining days.

Total-Day Difference Total Number of Days

Expresses the complete period as one continuous number of days.

Inclusive Counting

What Does “Include End Date” Mean?

Normally, the difference between two consecutive dates is one day. Inclusive counting also counts the final date.

Start 1 Sep

End 2 Sep

Normal 1 Day

Inclusive 2 Days

Useful For

Common Uses of a Date Difference Calculator

Employment Duration

Project Duration

Travel Duration

Application Dates

Event Duration

Elapsed Time

Date Calculation Note

Calendar calculations can depend on whether boundary dates are included or excluded. For official service, legal, financial, admission or eligibility calculations, follow the rules specified by the relevant authority.

About Date Difference Calculator

Calculate the time between two dates and view the difference in years, months, days, total days and weeks.

How to use this calculator

Enter the required values in the calculator.
Select any applicable rate, option or calculation mode.
Click the calculate button if required.
Review the calculated result and related information.

Important

Calculator results are provided for informational and estimation purposes. Verify important financial, academic or government-related calculations using applicable official rules or documents.