# Calculations while adding new record

**URL:** <https://community.glideapps.com/t/calculations-while-adding-new-record/46583>\
**Category:** Ask for Help\
**Created:** [August 12, 2022, 7:22am UTC](https://community.glideapps.com/t/calculations-while-adding-new-record/46583 "2022-08-12T07:22:08Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![nathanaelb](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/nathanaelb/32/43079_2.png) [@nathanaelb](https://community.glideapps.com/u/nathanaelb)\
**Post date:** [August 12, 2022, 7:42am UTC](https://community.glideapps.com/t/calculations-while-adding-new-record/46583/2 "2022-08-12T07:42:19Z")

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I think you will need to create a **custom form**.

You cannot achieve what you want with a native form, since with a native form the data can only be computed _after_ it is submitted, whereas you need to compute it _before_.

Darren explains custom forms here:

> [@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…

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