# Complicated Question:)

**URL:** <https://community.glideapps.com/t/complicated-question/65388>\
**Category:** Ask for Help\
**Created:** [August 25, 2023, 1:58pm UTC](https://community.glideapps.com/t/complicated-question/65388 "2023-08-25T13:58:10Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Espen](https://avatars.discourse-cdn.com/v4/letter/e/b5a626/32.png) [@Espen](https://community.glideapps.com/u/Espen)\
**Post date:** [August 25, 2023, 1:58pm UTC](https://community.glideapps.com/t/complicated-question/65388/1 "2023-08-25T13:58:10Z")

</div>

Hello, I need some smart ones who can figure out a way to solve my problem:)

I am making a packing list.  
Now I have 2 tabs (list of equipment and packing list).  
Both tabs are checklist and now only the components “checked” is displaying in “packing list”. All good.  
Every component has a description and a weight (kg).

Problem: Is there any way to sum up the weight of the elements displaying in “packing list” the and display this somewhere? (reason for interest in this number is to see the weight of the backpack:)

Any suggestions?

---

<div class="post-metadata">

**Author:** ![Darren\_Murphy](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/darren_murphy/32/47326_2.png) [@Darren\_Murphy](https://community.glideapps.com/u/Darren_Murphy)\
**Post date:** [August 25, 2023, 2:24pm UTC](https://community.glideapps.com/t/complicated-question/65388/2 "2023-08-25T14:24:25Z")

</div>

- Use a Query column on your List, using a filter of (whichever column it is) “is checked”.
- Then use a Rollup column that takes a sum of the weight via the Query column.