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How to calculate interval days/weeks/months/years between two dates in Excel?

Author: Siluvia Last Modified: 2023-09-18

As below screenshot show, how can you calculate the interval days, weeks, months or years between two given dates in Excel? This article will show you formulas to achieve it.

Calculate interval days/weeks/months/years between two dates with formulas
Easily calculate interval days/months/years between two dates with an amazing tool


Calculate interval days/weeks/months/years between two dates with formulas

Please apply the below formulas to calculate interval days, weeks, months or years between two given dates in Excel.

Calculate interval of days

Select a blank cell, enter the below formula into it and press the Enter key. Drag the formula down to apply it to needed cells.

=DATEDIF(A2, B2, "d")

Calculate interval of weeks

Select a blank cell, enter the below formula into it and press the Enter key to get the interval weeks between two dates. Then drag the formula down to apply it to needed cells.

=ROUNDDOWN((DATEDIF(A2, B2, "d") / 7), 0)

Calculate interval of months

For calculating interval of months between two given dates, please apply the below formula.

=DATEDIF(A2, B2, "m")

Calculate interval of years

For getting interval years, this formula can help.

=DATEDIF(A2,B2,"y")

Note: In the formulas, A2 and B2 are the cells contain the given start date and end date. Please change them as you need.


Easily calculate interval days/months/years between two dates with an amazing tool

Here recommend the Date & Time Helper feature of Kutools for Excel. With this feature, you can easily calculate the interval days, months or years between two dates with several clicks only.

Before applying Kutools for Excel, please download and install it firstly.

1. Select a blank cell to output the result, and then click Kutools > Formula Helper > Date & Time helper. See screenshot:

2. In the Date & Time Helper dialog box, please configure as follows.

2.1) Click the Difference option in the Type section;
2.2) In the Date1 box, select the start date you will calculate the interval days based on;
2.3) In the Date2 box, select the end date you will calculate the interval days based on;
2.4) In the Output result type drop-down list, choose an option as you need;
Tips: If you want to calculate the interval days, choose the day option, for calculating interval months, choose month, for calculating interval years, choose year.
2.5) Click the OK button. 

3. Then the result is populated in selected cell, meanwhile, a formula is created automatically. You can drag the Fill Handle to other cells to get the results.

Note: Repeat the above steps to get interval months or years between two dates. The final result is shown as below:

  If you want to have a free trial (30-day) of this utility, please click to download it, and then go to apply the operation according above steps.


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