Any3DAny3D

OBJ to STL Converter

Convert OBJ 3D models to STL format with professional conversion options. Support mesh optimization, texture embedding, coordinate system conversion, and format-specific settings.

About This Tool

Convert OBJ 3D models to high-quality STL files. Automatically extract model information including vertices, faces, textures, and materials. Support common 3D formats like GLB, GLTF, OBJ, FBX, STL, 3MF, STEP/STP.

Tips

  • 1Automatically extract model information
  • 2Support mesh optimization and texture embedding
  • 3Real-time 3D preview

How to Use

1

Upload Your OBJ

Drag and drop your OBJ file or click to browse

2

Review Model Info & Settings

Check model information and adjust conversion settings

3

Download STL

Click convert and download your STL file instantly

Frequently Asked Questions

Q

What 3D formats are supported?

A

This tool supports conversion between various 3D formats including GLB, GLTF, OBJ, FBX, STL, 3MF, and STEP/STP. Each format has its dedicated conversion page with optimized settings.

Q

What's the difference between binary and ASCII format?

A

Binary format is more compact and faster to load, suitable for production use. ASCII format is human-readable text format, suitable for debugging and manual editing.

Q

How to handle textures?

A

For GLTF/GLB formats, you can choose to embed textures in the file or keep them as external references. For OBJ format, textures can be exported as separate MTL and image files.

Q

What is Draco compression?

A

Draco is an open-source library for compressing and decompressing 3D geometric meshes and point clouds. It can significantly reduce file size while maintaining visual quality, ideal for web applications.

Q

Can I adjust the model scale?

A

Yes! You can adjust the scale, rotation, and coordinate system (Y-up or Z-up) in the conversion settings. This ensures compatibility with different 3D software and engines.

Q

What's the difference between Y-up and Z-up?

A

Y-up and Z-up refer to different coordinate system conventions. Y-up uses the Y-axis as the vertical direction (used by OpenGL, Three.js), while Z-up uses the Z-axis (used by Blender, 3ds Max). The converter can automatically transform between these systems.