Convert OBJ to STL
Convert OBJ to STL online for free. No signup required. Your files upload over an encrypted connection and are deleted after 2 hours.
Free
no account needed
Frankfurt
stored in the EU
2 hours
then files are deleted
New conversion
Any format in, the right format out
Drag and drop your files here, or import from:
Upload files up to 100 MB in OBJ
How to convert OBJ to STL
Everything happens on this page, in any modern browser, with nothing to install.
Upload your OBJ file
Drag and drop your OBJ file or browse from your device, Google Drive, Dropbox, or OneDrive.
Convert to STL
Press Convert. To convert several OBJ files at once, add them all first.
Download your STL
Most files are ready in seconds.
What you get when you convert OBJ to STL
Each OBJ file you add comes back as its own download, under its original name.
- 01
With several results, Download all saves them all with one click.
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If one file in a batch fails, the others still finish, and the result says what went wrong.
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Your STL file converts on to PLY, GLB, GLTF and 5 more here.
What OBJ and STL files are
OBJ
OBJ is a plain-text 3D geometry format from Wavefront. It stores vertices, faces, normals and texture coordinates, and can reference materials through an MTL file, so it carries more than STL while staying readable by almost every 3D tool.
STL
STL is the standard file format for 3D printing. It describes a model's surface as a mesh of triangles without colour, texture or units, which keeps it simple and universally supported by slicers and CAD software.
Convert your OBJ files to other formats
Choose a target format below to convert your OBJ files quickly and easily.
OBJ to PLY
Convert OBJ files to PLY format.OBJ to GLB
Convert OBJ files to GLB format.OBJ to GLTF
Convert OBJ files to GLTF format.OBJ to DAE
Convert OBJ files to DAE format.OBJ to FBX
Convert OBJ files to FBX format.OBJ to 3MF
Convert OBJ files to 3MF format.OBJ to X3D
Convert OBJ files to X3D format.OBJ to 3DS
Convert OBJ files to 3DS format.
Convert other files to STL
Select a source format below to convert files to STL.
DXF to STL
Convert DXF files to STL format.PLY to STL
Convert PLY files to STL format.GLB to STL
Convert GLB files to STL format.GLTF to STL
Convert GLTF files to STL format.FBX to STL
Convert FBX files to STL format.DAE to STL
Convert DAE files to STL format.3DS to STL
Convert 3DS files to STL format.X to STL
Convert X files to STL format.3MF to STL
Convert 3MF files to STL format.AMF to STL
AMF is an XML format for 3D printing standardized as ISO/ASTM 52915.OFF to STL
Convert OFF files to STL format.X3D to STL
Convert X3D files to STL format.
Frequently asked questions
Still have questions? Contact support.
Is it free to convert OBJ to STL?
Yes, converting OBJ to STL is completely free. You can convert files up to 100 MB and up to 10 files per batch, and no signup or account is required.
Will converting OBJ to STL affect the quality?
Our converter preserves the original quality of your OBJ files during the conversion to STL. The output maintains formatting, layout, and visual fidelity as closely as possible.
Can I convert multiple OBJ files to STL at once?
Yes. You can convert up to 10 OBJ files to STL in a single batch. Drag and drop all the files at once, and Novitora processes them together.
Is my data safe when converting OBJ to STL?
Your files upload to Novitora servers over an encrypted TLS connection and are automatically deleted 2 hours after upload. Data is stored in the EU (Frankfurt), and we follow SOC 2-aligned security practices.
What devices can I use to convert OBJ to STL?
Novitora works in any modern web browser on desktops, laptops, tablets, and phones. There is nothing to install: open the page, upload your OBJ file, and download the STL.