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Elis Kostabi
Project manager
3Dstudio.co
Free 3D tools
for architects and designers
Convert and check 3D files in your browser, from IFC building models to STL prints.
Every tool runs on your own computer: no file is uploaded and no account is needed.
IFC viewer
Open IFC files from Revit, ArchiCAD and Tekla. Filter by element and level, check properties and measure.
Open the IFC viewerSTEP viewer
Open STEP and IGES files from SolidWorks, Fusion 360 and Inventor. See every part and measure.
Open the STEP viewerSTL viewer
View STL files for 3D printing with size, volume, weight and a watertight check.
Open the STL viewer3D converter
Convert between STEP, OBJ, FBX, STL, glTF, PLY, IFC and more, in both directions.
Open the 3D converterSTL converter
Convert 3D files and images to STL for 3D printing, with a watertight check.
Open the STL converterOBJ converter
Convert STL, FBX, STEP, glTF and 3DS to OBJ with materials, or OBJ to other formats.
Open the OBJ converterFBX converter
Convert FBX files from 3ds Max, Maya and Blender to OBJ, GLB or STL.
Open the FBX converter
How the tools work
Free, private and made for real files
The same 3 promises apply to every tool on this page.
Your files stay with you
The tools open and convert files inside your browser tab. Nothing is sent to our server, so confidential projects stay confidential.
Free, with no account
No sign-up, no watermark and no daily limit. We are a 3D studio, and the tools are free because some people who use them later need a model built or rendered.
Built for real project files
STEP assemblies, IFC building models, OBJ with textures and large STL files all open, with the size and triangle count shown before you convert.
What we do
When you need more than a file tool
The tools change file formats. Building the model, fixing it or turning it into images that sell a project is our work.
Architectural visualization
Photoreal images and films of buildings before they are built.
See architectural visualization
3D product rendering
Product images for catalogues and web shops, from your CAD files.
See product rendering
Free tools FAQ
Questions about the free tools
Who makes them, what they cost and what you may do with the files.
Ask us a questionWho makes these tools?
3D Studio, an architectural visualization studio working since 2013 for architects, developers and designers in 17 countries. We use the same file formats every day in our own projects.
Can I use the converted files in commercial work?
Yes. The files you convert are yours, and the tools add no watermark and no licence of their own. The only limits are the ones on the model you started with.
Which tools are coming next?
A DWG to PDF converter for CAD drawings is next. A tool is added to this page when it works, not before.
Start a project
Need a 3D model or render instead?
Send the drawings, BIM or mesh files you have. We reply with one fixed price and a delivery date within 30 minutes.