# Calculation within a form **URL:** https://community.glideapps.com/t/calculation-within-a-form/36200 **Category:** Ask for Help **Created:** [December 21, 2021, 4:59pm UTC](https://community.glideapps.com/t/calculation-within-a-form/36200 "2021-12-21T16:59:05Z") **Posts on this page:** 1 **Showing post:** 2
### 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: [December 21, 2021, 7:05pm UTC](https://community.glideapps.com/t/calculation-within-a-form/36200/2 "2021-12-21T19:05:54Z")
With a native glide form, you won’t be able to show the calculation in real time as they type, but once you submit the form, the destination sheet could have a math column to do the calculation. I’d you want to see the calculations in real time, then I would set up a custom form. > [@How do I create a custom form?](https://community.glideapps.com/t/how-do-i-create-a-custom-form/25014): > > I’m just dropping this here so I have something to refer people to when they ask. This is a simple concept app (copyable), that demonstrates the following techniques: Building custom forms for adding and editing list items (as an alternative to the native forms provided by Glide) Preventing duplicate new entries using [User Specific Columns](https://docs.glideapps.com/all/reference/data-editor/user-specific-columns) and [Relations](https://docs.glideapps.com/all/reference/data-editor/computed-columns/relation-column) Enforcing mandatory input items The use of visibility conditions and user specific booleans to control user flow There is nothing particula… --- _[View the full topic](https://community.glideapps.com/t/calculation-within-a-form/36200)._