STL to 3MF Conversion
Discover the simplest way to turn STL into 3MF using our powerful tool:
Install Autoconverter
Download and install Autoconverter on your system. Launch the software to convert STL mesh files to 3MF format.
Import STL Mesh File
Click Open... to load your STL (.stl) mesh file, or drag and drop it into the application window.
Export to 3MF Format
Use Save As... to export your mesh file to the 3MF mesh file format (.3mf).
Still stuck on STL to 3MF conversion? Our practical guides help you complete STL mesh files conversion successfully:
- Upgrade to Modern 3MF for Full-Color 3D Printing
- Batch Convert 3D Mesh Files with Autoconverter (STEP, STL, OBJ & More)
- Enhance BricsCAD V24 with Automesher and Automapki Applications
- Automesher Desktop Application for Windows to Convert 3D File Formats
What is an STL File? (STereoLithography Format Explained)
The STL file format (short for STereoLithography) was developed by 3D Systems, a pioneer in the 3D printing industry, to simplify rapid prototyping and manufacturing processes. Today, STL files are one of the most common file types used in computer-aided design (CAD), digital fabrication, and additive manufacturing workflows. STL models exclusively represent 3D geometry as a triangular mesh, offering high compatibility and fast processing across various 3D printers and modeling software.
Key Features of the STL Format
- Lightweight and Simple: An STL file contains only the coordinates of vertices and normal vectors of triangles, making it extremely easy for 3D software and printers to interpret.
- No Textures or Materials: STL models do not store color, texture, transparency, or material information, resulting in pure geometric representations without extra attributes.
- Two Storage Methods: STL files are available in two distinct formats:
- Binary STL: The most popular choice due to its small file size, ideal for faster saving, sharing, and printing.
- ASCII STL: A human-readable text format that explicitly describes each triangle but produces significantly larger files.
- No Fixed Units: The STL format does not define units (millimeters, inches, etc.). Most programs assume millimeters by default. Our STL files converter can automatically handle unit adjustments during file conversion if needed.
STL File Conversion Made Easy
Looking to convert STL files into other popular 3D formats? Autoconverter and Automesher Application offer powerful, high-precision STL file conversion to formats like STEP, OBJ, and SKP. These tools allow you to:
- Preserve mesh accuracy and surface details during conversion.
- Batch convert multiple STL files automatically.
- Optimize, clean, and repair STL models for 3D printing or CAD workflows.
Whether you are a 3D designer, engineer, or enthusiast, our STL converters streamline your work. Convert STL to STEP, OBJ, SKP and more - start your free trial today!
3MF (3D Manufacturing Format) File
The 3MF (3D Manufacturing Format) is an open-source XML-based file format developed by the 3MF Consortium - an industry group composed of leading companies in the 3D printing sector. 3MF was specifically designed to address the limitations of older formats like STL, offering a richer, more extensible framework for modern additive manufacturing workflows. With 3MF, you can store not just the model geometry, but also color, textures, material properties, and metadata within a single file.
Key Advantages of 3MF Over STL
Unlike traditional STL files that store only basic 3D geometry, the 3MF format provides a wide range of enhanced capabilities:
- Color Support: Enables full-color 3D printing by defining colors per triangle or per object, enhancing model realism.
- Transparency and Opacity: Supports adjustable transparency for parts of the model, allowing the creation of translucent and transparent objects.
- Texture Mapping: Associates 2D image textures with 3D surfaces, producing highly detailed and visually realistic prints.
- Embedded Metadata: Includes detailed information such as author, copyright, licensing, description, and more—improving project management and file documentation.
3MF File Conversion and Workflow
Our Autoconverter and Automesher Application offer full support for importing, exporting, and converting 3MF files. Powered by the official lib3mf library, our software ensures high compatibility and reliable file processing across various 3D printing and CAD workflows.
Note: A current limitation of the 3MF format is its lack of support for nested group hierarchies. When converting complex 3D models with subgroup structures, the hierarchy will be flattened during export. Nevertheless, 3MF remains a highly advanced and preferred format for professional 3D printing, providing significant advantages over older standards like STL.
Streamline Your 3D Printing Projects
Upgrade your additive manufacturing workflows with powerful 3MF file conversion capabilities. Try Autoconverter and Automesher Application today to experience seamless 3MF file handling, enhanced model fidelity, and smoother 3D printing preparation!
STL vs 3MF Comparison
| Property | STL | 3MF |
|---|---|---|
| Extensions | .stl | .3mf |
| Name | STereoLithography | 3D Manufacturing Format |
| Versions | ||
| Textures | ||
| Colors | ||
| Geometry components | ||
| Readers | ||
| Writers |