# Add duration to a date time entry to calculate the end time

**URL:** <https://community.glideapps.com/t/add-duration-to-a-date-time-entry-to-calculate-the-end-time/76379>\
**Category:** Ask for Help\
**Tags:** date-math\
**Created:** [September 14, 2024, 6:42pm UTC](https://community.glideapps.com/t/add-duration-to-a-date-time-entry-to-calculate-the-end-time/76379 "2024-09-14T18:42:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Carl\_Johnson](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/carl_johnson/32/75656_2.png) [@Carl\_Johnson](https://community.glideapps.com/u/Carl_Johnson)\
**Post date:** [September 14, 2024, 6:42pm UTC](https://community.glideapps.com/t/add-duration-to-a-date-time-entry-to-calculate-the-end-time/76379/1 "2024-09-14T18:42:44Z")

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I am able to add DAYS easily using a math column to a date-time value but I need to just increment the MINUTES instead.

For example a start date of 9/14/24 4:00 PM + 45 minutes duration should produce 9/14/24 4:45 PM as an END time so the events display correctly on a calendar.

Glide seems to only want to add days by default. Seems like this must have been addressed but I can’t find a topic.

thanks as always

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**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\
**Post date:** [September 14, 2024, 6:48pm UTC](https://community.glideapps.com/t/add-duration-to-a-date-time-entry-to-calculate-the-end-time/76379/2 "2024-09-14T18:48:56Z")

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It’s just a math conversion. There’s 1440 minutes in a day, so 45/1440 will give you the decimal equivalent in days.