Convert OBJ files to STL in seconds. Geometry, UVs and materials are carried over where STL supports them, and the model lands the right way up.
Drop it on the converter above or click browse. It opens in your browser, so nothing is uploaded.
STL is already selected. You can switch to any other output from the menu.
Click Convert and your STL file is ready in seconds. Download it straight away.
OBJ is a plain-text mesh format with optional texture coordinates and normals; materials and textures live in a companion .mtl file. It opens almost everywhere, from Blender to 3D printing software.
STL describes a surface as a list of triangles, with no colour, material or unit information. It is the default file for 3D printing and is exported by almost every CAD and modelling program.
If your OBJ has companion files (.mtl and texture images), select them together with the OBJ file so materials come through.
Colours and texture coordinates are carried over when STL supports them. STL does not store textures, so only the geometry carries over.
No. OBJ and STL may use different "up" directions, and we rotate the model so it stands the same way in your software.
No. The conversion runs inside your browser.