# Add Integer to Date Field

**URL:** <https://community.fibery.io/t/add-integer-to-date-field/4584>\
**Category:** Get Help\
**Created:** [June 9, 2023, 8:51am UTC](https://community.fibery.io/t/add-integer-to-date-field/4584 "2023-06-09T08:51:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![AdrianC](https://avatars.discourse-cdn.com/v4/letter/a/c68b51/32.png) [@AdrianC](https://community.fibery.io/u/AdrianC)\
**Post date:** [June 9, 2023, 8:51am UTC](https://community.fibery.io/t/add-integer-to-date-field/4584/1 "2023-06-09T08:51:36Z")

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Hi,  
We are building an application to track the gathering of requirements in Fibery.  
We have an entity called Project and it currently has a start and end date, they can all be displayed on a timeline. That’s good.  
I’d love it to be a bit more dynamic though.  
I can add a field for forecast project duration to hold an integer value in days or weeks  
I’d love to calculate an end date from the start date + duration but Fibery won’t allow me to do that ( I think )  
Is there a formula that I’ve missed?

Thanks in advance

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<div class="post-metadata">

**Author:** ![AdrianC](https://avatars.discourse-cdn.com/v4/letter/a/c68b51/32.png) [@AdrianC](https://community.fibery.io/u/AdrianC)\
**Post date:** [June 9, 2023, 9:39am UTC](https://community.fibery.io/t/add-integer-to-date-field/4584/2 "2023-06-09T09:39:04Z")

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I actually found a solution this morning, straightforward enough

[Forecast Start Date] + Days([Forecast Duration])

Happy days  
On to the next problem