Convert OBJ to STL online — free

Convert your OBJ 3D models to STL in seconds, directly from your browser. Prepare your files for 3D printing with maximum compatibility. No installation, no registration, no hidden costs.

🚀 Convert OBJ to STL now — Free

Why convert OBJ to STL?

OBJ (Wavefront Object) is a flexible 3D format that stores geometry, colors, textures, and material information. It's widely used in 3D modeling, animation, and game development.

STL (Stereolithography) is the standard format for 3D printing. It stores only geometry (vertices and faces), no colors or textures. But that simplicity is exactly why it's so widely supported: almost every 3D printer and slicer software accepts STL files.

Converting OBJ to STL is useful when you want to:

⚠️ Note: STL does not store colors, textures, or material information. If your OBJ file has colors or textures, they will not be preserved in the STL. For 3D printing this is usually not a problem, since most printers work with a single material color.

How to convert OBJ to STL in 4 simple steps

Follow these steps to convert your OBJ file to STL in less than a minute.

1

Open ArtiFix in your browser

Go to ArtiFix. No installation, no registration required.

2

Upload your OBJ file

Click "Upload" and select your OBJ file from your computer. You can also drag and drop the file directly into the upload box.

3

Select STL as output format

In the "Convert Formats" page, select STL (.stl) from the list of available target formats.

4

Convert and download

Click "Convert to STL" and wait a few seconds. Then click "Download .stl" to save the file to your computer. Your STL file is now ready for 3D printing.

🚀 Start converting OBJ to STL now

Why use ArtiFix to convert OBJ to STL?

💯 100% Free

No hidden costs, no subscriptions, no credit card required. ArtiFix is free forever.

🔒 Privacy first

Files are processed in memory and not stored on our servers. No tracking, no sharing.

⚡ Fast conversion

Convert OBJ to STL in a few seconds. No software to install, no waiting.

🖨️ Ready for 3D printing

The resulting STL file is compatible with all slicers: Cura, PrusaSlicer, Simplify3D, and more.

Frequently asked questions

Is converting OBJ to STL free?

Yes, ArtiFix is completely free. There are no hidden costs, no subscriptions, and no registration required to convert OBJ to STL.

Why convert OBJ to STL?

STL is the standard format for 3D printing. Most 3D printers and slicer software (Cura, PrusaSlicer, Simplify3D) accept STL files. If your 3D model is in OBJ format and you want to 3D print it, converting to STL ensures maximum compatibility with 3D printing tools.

Will I lose color and texture when converting OBJ to STL?

Yes. STL is a geometry-only format — it does not store color, texture, or material information. If your OBJ file has textures or colors, they will not be preserved in the STL file. For 3D printing this is usually not a problem, because most 3D printers work with a single material color. If you need to preserve colors, consider using 3MF or OBJ instead.

Are my OBJ files safe?

Yes. Files are processed in memory on the server and are not stored after processing. ArtiFix does not share your data with third parties.

Can I convert OBJ to STL on mobile?

Yes. ArtiFix works on any device with a modern browser, including smartphones and tablets. No app installation is required.

Other conversion guides

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Convert STL to 3D PDF

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Repair STL file

Restore damaged or corrupted STL files.

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