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How to calculate end date from start date and duration in Excel?

Author: Xiaoyang Last Modified: 2020-04-23

If you have a list of start dates and durations, now, you want to calculate the end date based on the start date and duration. How could you solve this job in Excel?

Calculate end date from start date and duration with formulas

Calculate end date from start date and duration with an amazing feature


Calculate end date from start date and duration with formulas


Calculate end date from start date and years, months, weeks duration

The following formulas can help you to calculate the end date from the given start date and duration, please do as this:

Calculate end date from start date and duration(weeks):

1. To calculate the end date from start date and number of weeks, please enter the following formula into a blank cell:

=IF(A2,A2+(B2*7),"")

Note: In this formula: A2 is the start date and B2 is the duration.

2. And then, drag the fill handle down to the cells you want to apply this formula, and a list of numbers are displayed as following screenshot shown:

3. Then you should format the numbers as date format, click Home tab, choose Short Date from the General drop down list, and the numbers have been formatted as date format, see screenshot:


Calculate end date from start date and duration(months):

If you want to calculate the end date from start date and number of months, the following formula may do you a favor:

1. Enter this formula into a blank cell where you want to get the result:

=DATE(YEAR(A2),MONTH(A2)+B2,DAY(A2))

Note: In this formula: A2 is the start date and B2 is the duration.

2. And then, drag the fill handle down to the cells you want to fill this formula, and the end date has been calculated at once, see screenshot:


Calculate end date from start date and duration(years):

To calculate end date based on given start date and number of years, please apply the below formula:

=DATE(YEAR(A2)+B2,MONTH(A2),DAY(A2))

Note: In this formula: A2 is the start date and B2 is the duration.

Then, drag the fill handle down the cells that you want to apply this formula, and all end dates have been calculated. See screenshot:


Calculate end date from start date and duration(years, months and days):

To get end date based on given start date and number of years,months and days, please apply the below formula:

=DATE(YEAR(A2)+B2,MONTH(A2)+C2,DAY(A2)+D2)

Note: In this formula: A2 is the start date and B2 is the duration of year, C2 is the duration of month, and D2 is the duration of day that you want to add.

Then drag the fill handle down to fill the formula to other cells you need, and all of the end dates have been calculated, see screenshot:


Calculate end time from start time and hours, minutes, seconds duration

Somtimes, you may want to return the end time from the start time and duration of hours, minutes and seconds, the TIME fucntion in Excel can do you a favor.

Please enter or copy the below formula into a blank cell:

=A2+TIME(B2,C2,D2)

Note: In this formula: A2 is the start time and B2 is the duration of hour, C2 is the duration of minute, and D2 is the duration of second that you want to add.


Calculate end date from start date and duration with an amazing feature

Perhaps, you are bored with the above formulas, here, I will talk about a useful tool-Kutools for Excel, with its Date & Time helper feature, you can quickly deal with this job as easily as possible.

Note:To apply this Date & Time helper, firstly, you should download the Kutools for Excel, and then apply the feature quickly and easily.

After installing Kutools for Excel, please do as this:

1. Click a cell where you want to output the calculated result, and then click Kutools > Formula Helper > Date & Time helper, see screenshot:

2. In the Date & Time Helper dialog box, please do the following operations:

  • Check the Add option from the Type section;
  • Click button to select a cell that contains the start date that you want to use from the Enter a date or select a date formatting cell text box;
  • Then type or select the cell of the number durations you want to add in the Enter number or select cells which contain values you want to add section.

3. After finishing the settigs, click OK button, and you will get the first calculated result, then, you just need to drag the fill handle down to the cells that you want to apply this formula, and you will get the following result:

Click to Download Kutools for Excel and free trial Now!


More relative date and time articles:

  • Calculate The Length Of Service From Hire Date
  • If you have a range of data including employee names and their date of joining your company in a worksheet, now, you may want to calculate their length of service, it means to get how many years and months an employee has worked for your company. This article, I will talk about quick method to solving this job for you.

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Comments (9)
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This comment was minimized by the moderator on the site
I want to calculate the total hours, minutes and seconds with number of days. How do i do that in excel?
This comment was minimized by the moderator on the site
I need to have one end date for any start date within the past year - so multiple submissions throughout the year but the expiry should be based on one year from the first entry date. If request was made on Nov 11,2021 - expiry will be Nov 10, 2022. If another submission is made on Dec 13,2021 - expiry date should still be Nov 11, 2021. Can you help? 
This comment was minimized by the moderator on the site
<p>I have the start date and time / end date and time and neet to calculate the duration in hours and min.</p>
This comment was minimized by the moderator on the site
I have start time and end for group of members on daywise, I need hourly report like at 12 PM how many accounts are accessing application.
This comment was minimized by the moderator on the site
Hi,I want to calculate the end date using start date and duration in minutes.
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