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OFF converter, in your browser.

Convert OFF files to OBJ, STL, PLY and GLB and more, or turn other files into OFF. Everything on this page is converted in your browser, so your files never leave your device.

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About OFF

OFF lists a mesh as plain text: a header with the vertex and face counts, one line per vertex, then one line per polygon giving its corner count and vertex indices. Variants add vertex colours (COFF) or normals (NOFF). Its simplicity made it the format of shape benchmarks such as Princeton's and ModelNet.

OFF has no materials, textures or units, and few 3D modelling or printing programs open it. OFF is a short, readable text file that geometry libraries and research code read directly.

Stands for
Object File Format
Type
3D model
Compression
None (text)
Introduced
The early 1990s, by the Geometry Center, University of Minnesota (for Geomview)
Opens in
MeshLab, Geomview, CGAL, trimesh and most geometry-processing tools
Best for
Simple polygon meshes in research code and shape datasets
File extension
.off
MIME type
model/x-off

Questions

How do I open an OFF file?

OFF opens in: MeshLab, Geomview, CGAL, trimesh and most geometry-processing tools. If your device or app cannot open it, convert it to OBJ or STL above.

What can I convert OFF to?

ToAny converts OFF to OBJ, STL, PLY, GLB and glTF.

What can I convert to OFF?

ToAny creates OFF files from STL, OBJ, PLY, glTF and GLB.

Are my files uploaded?

No. Every OFF conversion listed here runs inside your browser. The files stay on your device.