Free Online GLTF to STL Converter

You can use our GLTF to STL conversion tool to quickly and easily convert your 3D model files for free. You may upload up to 20 files at one time, and our batch GLTF to STL converter will process each 3D model and present you with a download link for each file once completed.

Select File(s)

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your GLTF file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted GLTF file before this time.

Our 3D model GLTF to STL tool will load your GLTF file and, where supported, attempt to extract all the relevant 3D features, such as geometry, textures, and animations. To access the 3D conversion configuration options, click the button when you have selected your files. The current options support the ability to voxelize your 3D model and more.

How to Convert your GLTF to STL Online?

Here are two simple steps to convert your GLTF to STL using our fast and free GLTF converter tool.

Upload your GLTF file

Click the "Upload a GLTF File" button, then select a GLTF to upload. The maximum file size is 100MB.

Download your STL

Click the download link to receive your STL file.

Frequently Asked Questions

How can I convert my GLTF file to STL?

First, click the "Upload..." button and select your GLTF file to upload. Your GLTF file will be uploaded to our servers. When the GLTF to STL conversion has completed, you can download your STL file right away.

How long does it take to convert my GLTF to STL?

We aim to process all GLTF to STL conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.

How accurate is the GLTF to STL conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.

File format information for GLTF and STL

Extension	GLTF
Full Name	Graphics Language Transmission Format
Type	3D Model
Mime Type	model/gltf-binary
Format	Binary

GLTF files are the plain text JSON equivalent of the GLB 3D file format developed and maintained by the Khronos Group. GLTF files are designed to be an open and expandable 3D format that can store 3D graphics and their assets, such as textures, animations, and more.

The content of a GLTF file is stored as plain text using a JSON data structure, which enables efficient storage of 3D modeling data. Large and complex 3D scenes can lead to inflated file sizes; where this is an issue, it is recommended to switch to the binary GLB format to help reduce the file size.

Due to their open format, GLB files are widely supported by 3D editing software. The format has gained traction amongst videogame developers and other 3D artists as a primary means of exchanging 3D data between different applications.

GLTF Converter Capabilities

Our GLTF 3D Model/Mesh tool does not support any color material data contained within GLTF files, so the converted file will not contain any color information.

Extension	STL
Full Name	Standard Triangle Language
Type	3D Model
Mime Type	application/vnd.ms-pki.stl
Format	Text
Opens With	Blender, MeshLab, CAD Assistant, DAZ Studio

The STL, or Standard Triangle Language, file format has been around since the '80s and is supported by most modern 3D modeling applications. In particular, the STL format has become something of a standard format within the area of 3D printing, despite the rise of more modern formats such as 3MF.

STL files come in two flavors: binary or text format. The text format is human-readable, making it easy to perform manual edits, but can lead to very large file sizes. As you can imagine, the binary format is much more compact and represents the majority of the STL files you are likely to encounter.

The format itself is very simple; the 3D model is represented by a sequential list of triangles, with each triangle defined with 3 points consisting of their X, Y, and Z positions, along with an additional vector that contains the face normal (the direction the face is pointing). There is an additional attribute block for each triangle; however, this is largely unused and thus unsupported.

STL Converter Capabilities

Our 3D conversion tool does not support color or material information in STL files, so your file will not contain any color information.

Information for converting from GLTF to STL

Your GLTF file will be converted to a STL file using our unified 3D model and mesh conversion tool. Our GLTF 3D tool performs accurate conversions of 3D elements such as vertices, faces, normals, and relevant material information. Our tool will not attempt to transfer any color information if it is present in your GLTF file; your final 3D model will contain only geometry data.