# converting .stl to .nrrd

**URL:** <https://discourse.slicer.org/t/converting-stl-to-nrrd/3726>\
**Category:** Support\
**Created:** [August 10, 2018, 7:30pm UTC](https://discourse.slicer.org/t/converting-stl-to-nrrd/3726 "2018-08-10T19:30:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mikayle](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mikayle](https://discourse.slicer.org/u/mikayle)\
**Post date:** [August 10, 2018, 7:30pm UTC](https://discourse.slicer.org/t/converting-stl-to-nrrd/3726/1 "2018-08-10T19:30:06Z")

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Is there a way to convert my .stl to a .nrrd?

I am able to import my stl into Slicer through Import\>Models which supposedly creates a Segmentation (though nothing appears on the screen) and then my export segmentation options are vtm.

Thanks!

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**Author:** ![fedorov](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fedorov/32/14_2.png) [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Post date:** [August 10, 2018, 7:31pm UTC](https://discourse.slicer.org/t/converting-stl-to-nrrd/3726/2 "2018-08-10T19:31:45Z")

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You can use “Segmentations” module to export segmentation as Labelmap (“Export/import models and labelmaps” section), which you will then be able to save as NRRD.

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**Author:** ![Fernando\_Saguier](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fernando_saguier/32/18065_2.png) [@Fernando\_Saguier](https://discourse.slicer.org/u/Fernando_Saguier)\
**Post date:** [January 17, 2023, 10:09pm UTC](https://discourse.slicer.org/t/converting-stl-to-nrrd/3726/3 "2023-01-17T22:09:29Z")

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Hello Fedorov,  
How can I create one NRRD file that contein multiple segmentations.vtm