# Add Duration to Datetime **URL:** \ **Category:** Ask for Help\ **Created:** [February 27, 2025, 5:32pm UTC](https://community.noloco.io/t/add-duration-to-datetime/1754 "2025-02-27T17:32:32Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![cizict](https://avatars.discourse-cdn.com/v4/letter/c/b4bc9f/32.png) [@cizict](https://community.noloco.io/u/cizict)\ **Post date:** [February 27, 2025, 5:32pm UTC](https://community.noloco.io/t/add-duration-to-datetime/1754/1 "2025-02-27T17:32:32Z")
Hello, i have a date field Start Date (formated as datetime) and a duration field. I would like to create a Formula field to add the duration field to the Start date field to give an ‘End Date Time’ field e.g. 27/02/2025 17:30:00 + 00:30:00 = 27/02/2025 18:00:00 I have attempted to do this with via a formula by adding the duration field to the start date and wrapping this in TODATE but that is not giving me the correct result. Any ideas? ---
**Author:** ![garyGHL](https://dub1.discourse-cdn.com/flex005/user_avatar/community.noloco.io/garyghl/32/555_2.png) [@garyGHL](https://community.noloco.io/u/garyGHL)\ **Post date:** [February 28, 2025, 11:21am UTC](https://community.noloco.io/t/add-duration-to-datetime/1754/2 "2025-02-28T11:21:07Z")
No sure if this is useful but its how I do something very similar. **TODATE(DATE(YEAR(Signedupdate) + Mortgage Term + 7,MONTH(Signedupdate),DAY(Signedupdate)))** Signedupdate is my Start Date, Mortagage Term would be you duration, then I add 7 years, you would remove that bit. **28/02/2025 + 30 + 7 = 28/02/2062** ---
**Author:** ![cizict](https://avatars.discourse-cdn.com/v4/letter/c/b4bc9f/32.png) [@cizict](https://community.noloco.io/u/cizict)\ **Post date:** [February 28, 2025, 12:39pm UTC](https://community.noloco.io/t/add-duration-to-datetime/1754/3 "2025-02-28T12:39:31Z")
Cheers Gary! Appreciated. I’ll have a play around with that formula.