How to convert STL files to OBJ online?

Step 1.

Upload STL-file

Click "Choose File" button to select a stl file on your computer. STL file size can be up to 50 Mb.
Step 2.

Convert STL to OBJ

Click "Convert" button to start conversion.
Step 3.

Download your OBJ

Let the file convert and you can download your OBJ file right afterwards.

Information about STL and OBJ file formats

Name STL OBJ
Full name Stereolithography File Format OBJ geometry format
File extension .stl .obj
MIME type text/plain
Developed by 3D Systems Wavefront Technologies
Type of format
Description STL is a file format native to the stereolithography CAD software created by 3D Systems. This file format is supported by many other software packages. It is widely used for rapid prototyping, 3D printing and computer-aided manufacturing. STL files describe only the surface geometry of a three-dimensional object without any representation of color, texture or other common CAD model attributes. The STL format specifies both ASCII and binary representations. Binary files are more common, since they are more compact. OBJ (or .obj) is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visualizer animation package. The file format is open and has been adopted by other 3D graphics application vendors.
Technical details An STL file describes a raw, unstructured triangulated surface by the unit normal and vertices (ordered by the right-hand rule) of the triangles using a three-dimensional Cartesian coordinate system. In the original specification, all STL coordinates were required to be positive numbers, but this restriction is no longer enforced and negative coordinates are commonly encountered in STL files today. STL files contain no scale information, and the units are arbitrary. The OBJ file format is a simple data-format that represents 3D geometry alone — namely, the position of each vertex, the UV position of each texture coordinate vertex, vertex normals, and the faces that make each polygon defined as a list of vertices, and texture vertices. Vertices are stored in a counter-clockwise order by default, making explicit declaration of face normals unnecessary. OBJ coordinates have no units, but OBJ files can contain scale information in a human readable comment line.
Associated programs TurboCAD, GOM Inspect, STL Viewer, Geomagic Explorer, Parametric Technology Creo, Dassault Systemes CATIA, KeyCreator, MeshLab, SolidWorks, Pro/Engineer, CloudCompare, Blender, AutoCAD, 3D Studio Max, Autodesk Inventor, Mechanical Desktop Wavefront 3D, CADRazor, Adobe Photoshop, LogiKal, UVMapper, LightWave 3D, Autodesk Maya, IMSI TurboCAD Deluxe, MeshLab, MAXON Cinema 4D, Smith Micro Poser, Autodesk AutoCAD.
Wiki https://en.wikipedia.org/wiki/STL_(file_format) https://en.wikipedia.org/wiki/Wavefront_.obj_file