Free online SCAD to WRL converter

SCAD files are OpenSCAD source files, while WRL files contain an already generated VRML 3D scene. Conversion is needed when a VRML-compatible viewer, CAD package, simulator, or visualization workflow cannot use OpenSCAD source directly.

What the SCAD format is

SCAD is the native script format of OpenSCAD. It describes solid geometry through code: primitives, transformations, Boolean operations, loops, modules, variables, and imported geometry. OpenSCAD creates SCAD files, and users commonly encounter them in parametric 3D-printing projects, version-controlled design repositories, and downloadable model libraries.

A SCAD file is not normally a mesh or a directly viewable 3D model. OpenSCAD must evaluate the script before another application can use the resulting geometry. External files referenced with include, use, or import must remain available, and some models require custom libraries or parameter values.

What the WRL format is

WRL is the filename extension generally used for VRML files, especially VRML 2.0 files. It stores polygonal geometry, scene hierarchy, transformations, materials, colors, lights, cameras, and sometimes animation or interaction data.

VRML is useful for older CAD viewers, educational software, virtual-reality tools, and applications that accept a scene description rather than OpenSCAD code. It preserves viewable 3D geometry and basic appearance information, but it does not preserve the editable SCAD script, parameters, modules, or Boolean construction history.

How to convert SCAD to WRL

Using OpenSCAD and FreeCAD

1. Open the SCAD file in OpenSCAD and make sure all referenced libraries and assets are available.
2. Use Design → Render (CGAL), or press F6. Preview-only geometry from F5 may not be suitable for export.
3. Export the evaluated model as an STL file with File → Export → Export as STL, saving it as model.stl. The command-line equivalent is openscad -o model.stl model.scad.
4. Open FreeCAD and choose File → Open or File → Import to load model.stl. In the Mesh workbench, check the imported mesh for holes or unwanted disconnected parts.
5. Choose File → Export, select VRML or VRML 2.0 as the output type, and save the result as model.wrl.

Using the online converter

On 101convert.com, upload the SCAD file, select WRL as the output format, start the conversion, and download the generated file. This requires no installed conversion software; referenced libraries or external assets may not be available to a web converter, so locally rendered export is preferable for dependent or parameterized projects.

Quality and compatibility limitations

The STL intermediate step converts the evaluated SCAD result into triangles. Increase OpenSCAD’s $fn, or adjust $fa and $fs, before rendering if cylinders and curved surfaces appear faceted; higher values increase polygon count and file size.

Standard STL does not carry reliable material, texture, camera, or scene metadata. The WRL output therefore usually contains geometry with default appearance settings unless materials are assigned during the FreeCAD export. Separate SCAD objects may also become a single mesh, and the resulting WRL cannot be edited parametrically in OpenSCAD.

VRML readers differ in support for textures, transparency, normals, coordinate systems, and VRML 1.0 versus VRML 2.0 syntax. If the destination application rejects the file, export specifically as VRML 2.0, inspect the model in a second VRML viewer, and verify scale because STL and VRML workflows may use different unit assumptions.