# How to correctly calculate model box size

**URL:** <https://discourse.threejs.org/t/how-to-correctly-calculate-model-box-size/43973>\
**Category:** Questions\
**Tags:** model\
**Created:** [October 25, 2022, 6:17am UTC](https://discourse.threejs.org/t/how-to-correctly-calculate-model-box-size/43973 "2022-10-25T06:17:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![neciszhang](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/neciszhang/32/18988_2.png) [@neciszhang](https://discourse.threejs.org/u/neciszhang)\
**Post date:** [October 25, 2022, 6:17am UTC](https://discourse.threejs.org/t/how-to-correctly-calculate-model-box-size/43973/1 "2022-10-25T06:17:47Z")

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Hi,  
I use box3 to calculate model box size, it calculates wrong.  
[model link](https://alsc-nft-shprod-al-oss-1.oss-cn-shanghai.aliyuncs.com/test/%E9%A5%BF%E5%B0%8F%E5%AE%9D.glb)

 ![image](https://canada1.discourse-cdn.com/flex035/uploads/threejs/original/3X/5/6/56b9e583eaba11fe6700220ae0fd9a14c246f9ac.jpeg)

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**Author:** ![makc3d](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/makc3d/32/10452_2.png) [@makc3d](https://discourse.threejs.org/u/makc3d)\
**Post date:** [October 25, 2022, 6:51am UTC](https://discourse.threejs.org/t/how-to-correctly-calculate-model-box-size/43973/2 "2022-10-25T06:51:14Z")

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see [Box around a skinned mesh](https://discourse.threejs.org/t/box-around-a-skinned-mesh/21089)