3DS
3D Studio Model
A legacy format from Autodesk 3ds Max, still common in older 3D asset libraries.
Commonly used for
Legacy 3D assets
3DS to STL Converter
Convert 3DS files to STL free in your browser — no signup, no install, and the file is never uploaded to a server. STL keeps full quality with no further loss.
Completely free
Files are never uploaded
No signup required
Drop files or click to select
3DS → STL
What changes in this conversion
- The geometry (vertices and faces) is converted exactly. Material, texture and animation data is only carried over when both formats support it — STL keeps what it can and drops the rest.
How to use
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Add your 3DS file
Drag the 3DS file onto the drop area above, or click it to pick a file from your device. You can add several files at once.
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Confirm STL as the output
STL is already selected as the output format on this page. This format converts straight through with no extra settings.
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Run the conversion
Press the convert button. Processing happens on your own device, so the time depends on your computer rather than a server queue.
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Download the STL file
When it finishes, download the STL file. Converting multiple files gives you the option to download them together as a ZIP.
About these formats
STL
STL 3D Model
The de facto standard for 3D printing, describing surfaces purely as a mesh of triangles. It cannot carry color or material information.
Commonly used for
3D printing, rapid prototyping
Frequently asked questions
Is converting 3DS to STL really free?
Yes. 3DS to STL conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.
Are my 3DS files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so the 3DS file never leaves your device. That is also why it works without an internet connection once the page has loaded.
Does the STL file get bigger than the 3DS?
It can go either way. Both formats are lossless, so nothing is thrown away — the size difference comes from how each one packs the same data.
Is there a file size limit for 3DS to STL conversion?
The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.
Convert 3DS files to other formats
Convert other formats to STL
3D & CAD converter
What each file format is, what it is used for, and which formats it can be converted to.
Open converter Browse the full format reference