OFF to STL Converter

Select files for conversion or just drag and drop them to the upload area

How to convert OFF files to STL online?

Step 1.

Upload OFF-file

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

Convert OFF to STL

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

Download your STL

When the conversion process is complete, you can download the STL file.

Information about OFF and STL file formats

Full name Object File Format Stereolithography File Format
File extension .off .stl
MIME type
Developed by Princeton University 3D Systems
Type of format
Description OFF (Object File Format) is a geometry definition file format containing the description of the composing polygons of the 3D object. 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.
Technical details Object File Format (.off) files are used to represent the geometry of a model by specifying the polygons of the model's surface. The polygons can have any number of vertices. OFF files are all ASCII files beginning with the keyword OFF. The next line states the number of vertices, the number of faces, and the number of edges. The number of edges can be safely ignored. 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.
File conversion OFF conversion STL conversion
Associated programs MeshLab, GLC_Player 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
OFF to STL conversion quality rating:
4.8 (235 votes)
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