Free Online FBX to STL Converter

You can use our FBX 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 FBX 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 FBX file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted FBX file before this time.

Our 3D model FBX to STL tool will load your FBX 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 FBX to STL Online?

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

Upload your FBX file

Click the "Upload a FBX File" button, then select a FBX 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 FBX file to STL?

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

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

We aim to process all FBX 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 FBX 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.

How does converting FBX to STL work?

In order to successfully convert an FBX formatted file to the STL format, our converter tools will perform several initial checks to ensure the file provided is indeed an FBX file. There are many files out there where the file type extension does not match the data contained within the file. Along with these file type checks, our tools will do additional checks to ensure the file is correctly formatted to match the provided file type. There are many tools out there that do not always create FBX files to the exact specification.

Take your FBX file

The FBX file format can be either a text-based or binary format, meaning if its content is plain text, it is human-readable; otherwise, if it is binary, then it can only be edited with specialist FBX editing software. The data within the file, regardless of whether it is text or binary, contains the core elements that make up the 3D model, including vertices, faces and more. To guarantee efficient conversions, our tool will check all data that is contained within the FBX file and remove any information that is duplicated. This not only ensures the conversion completes more quickly, but also that the generated STL is smaller.

As the STL file format does not support material textures, our tool when processing the FBX file will ignore any texture image files that may be present. It will also ignore any texture coordinate information present in the 3D model data.

Convert the data from FBX to STL

Now that the data from the FBX file has been processed, our tool can apply any conversion specified options, such as enabling Voxel mode, and with these applied, prepare the data to be converted to the final STL file format. Part of this process ensures checking the capabilities of the STL format and removing any data that cannot be represented.

Save to the STL format

At this point, the FBX to STL conversion tool will have the 3D model in a state that is ready to be transferred to the STL format. Our tool creates the STL file, ensuring all the model data is present and is formatted to match the STL file specification to ensure the file opens in compatible STL file editors. To ensure a compact file size, our FBX to STL converter will always save the STL file in a binary format.

File format information for FBX and STL

Extension	FBX
Full Name	Autodesk Filmbox
Type	3D Model
Mime Type	application/octet-stream
Format	Text
Opens With	Blender, MeshLab

FBX files are an open 3D file format developed by Autodesk for use with their Maya and 3Ds Max applications. An FBX file may contain any number of 3D objects, their associated geometry, materials, textures, animations, and more, all within a single convenient package.

The content of an FBX file is a mix of binary and ASCII text, producing a format that is both human-readable and compact. Due to their compact size, ease of use, and widespread support, FBX files are a popular choice for creating 3D animations and are also a staple in the videogame development scene.

The development of the FBX format continues to this day, with new features being included in each release. Along with being used within Autodesk's own editing solutions, FBX files can also be opened and edited in other popular 3D modelling applications, such as Blender.

FBX Converter Capabilities

When converting 3D model or mesh files using our FBX converter, we will attempt to convert colour materials into a suitable format for use in the converted file.

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 modelling 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 flavours: 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

When converting your FBX to STL, our tool will attempt to accurately convert any colour or material information.

Information for converting from FBX to STL

Your FBX file will be converted to a STL file using our unified 3D model and mesh conversion tool. Our FBX 3D tool performs accurate conversions of 3D elements such as vertices, faces, normals, and relevant material information. As both FBX and STL support colour material information, our tool will also attempt to convert the colour information.