Convert CAD & 3D files free without uploading them.
Drop a model, inspect it in a full-screen 3D preview, and export to the format you need. The whole engine runs in your browser — no queue, no account, no file leaving your machine.
Files are read locally. Model content and file names never leave your device; only an anonymous byte count and page analytics do.
CADtomesh for Windows
Batch queues, 15 output formats and conversion with no internet connection.
Three steps. None of them upload.
From a raw CAD solid to a slicer-ready mesh, entirely on your device.
Choose a file
Read locally with the File API. Drag it anywhere or pick a sample to explore the workspace first.
Preview in full 3D
Orbit, zoom and pan around your model on a large canvas. Check orientation, scale and detail before you export.
Download
Pick an output format and the result writes straight to disk. No queue, no watermark, no sign-up.
Twenty-eight formats in, eight out.
Solid and mesh inputs are both supported. Output opens in Cura, PrusaSlicer, Blender or any AR viewer.
Jump straight to a conversion.
Each link opens the workspace with the source and target preselected.
Your models never leave your device.
cadtomesh is a static website. Conversion happens inside your browser tab using a WebAssembly geometry kernel — there is no upload endpoint and nothing to retain.
No upload, ever
Files are read into memory and written back as a local download.
Runs locally
The whole engine runs inside the tab. The first CAD conversion fetches the geometry kernel once; your browser caches it afterwards.
No account, no tracking
No sign-up, no advertising scripts, no fingerprinting.
Frequently asked
No. Your browser reads the file into memory, parses it locally and writes the result as a download. There is no upload endpoint and no server-side conversion service.
Twenty-eight inputs: STEP, IGES, BREP, STL, OBJ, PLY, GLB, glTF, 3MF, FBX, DAE, KMZ, USDZ, USDA, IFC, 3DS, AMF, VOX, MD2, WRL, LWO, VTK, XYZ, OFF and more, to eight outputs: STL, OBJ, PLY, GLB, glTF, 3MF, USDZ and DAE. CAD solids are tessellated by an OpenCascade WebAssembly kernel, building models by web-ifc, and meshes are read by three.js loaders.
The whole converter runs inside your browser tab, and your files never leave your device. It is not an installable offline app: pages are served over the network, and the first CAD conversion fetches the geometry kernel once, after which your browser reuses it.
Detail levels control how finely curved CAD surfaces are tessellated. Mesh files already contain triangles, so the setting only applies to CAD sources such as STEP and IGES.
Yes. cadtomesh is free with no conversion limits, no watermark and no account. It is a personal project built on open-source geometry libraries.