# Calculate inner volume

**URL:** <https://discourse.shapr3d.com/t/calculate-inner-volume/17368>\
**Category:** Modeling Questions\
**Created:** [February 12, 2022, 10:17am UTC](https://discourse.shapr3d.com/t/calculate-inner-volume/17368 "2022-02-12T10:17:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![davorin](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/davorin/32/12827_2.png) [@davorin](https://discourse.shapr3d.com/u/davorin)\
**Post date:** [February 12, 2022, 10:17am UTC](https://discourse.shapr3d.com/t/calculate-inner-volume/17368/1 "2022-02-12T10:17:25Z")

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Good morning (o;

Does someone have an idea how I could calculate the inner volume when I use the case tool  
with the help of an external tool?

 ![Bildschirmfoto 2022-02-12 um 11.14.59](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/0/04540d44314dbd52a791495797e5c1b8678a8079.png)

Basically what I want is the amount in liters to compare different speaker designs.

thanks in advance  
richard

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**Author:** ![JST](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@JST](https://discourse.shapr3d.com/u/JST)\
**Post date:** [February 12, 2022, 12:10pm UTC](https://discourse.shapr3d.com/t/calculate-inner-volume/17368/2 "2022-02-12T12:10:57Z")

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For example:  
At first make a copy.  
Make a bigger body , perhaps a cube, subtract your body from the cube,(use folders) delete the outer part, and you will get your inside body…

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<div class="post-metadata">

**Author:** ![davorin](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/davorin/32/12827_2.png) [@davorin](https://discourse.shapr3d.com/u/davorin)\
**Post date:** [February 12, 2022, 12:52pm UTC](https://discourse.shapr3d.com/t/calculate-inner-volume/17368/3 "2022-02-12T12:52:03Z")

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Just perfect…thanks 🙂

Didn’t much pay attention to the bottom status bar before showing the volume and surface (o;

 ![Bildschirmfoto 2022-02-12 um 13.50.52](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/e/ec8042feb22e5c67ce0f4ebd81e205a6003d5c8f.png)

Too bad it won’t show the volume when all inside surfaces are selected therefore building a closed body…at least the surface area is the same (well almost ;o):

 ![Bildschirmfoto 2022-02-12 um 13.58.12](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/b10f71f6736e6fed71a6119a964c53b3db368b48.png)