Batch Convert STEP, IGES, STL, OBJ & 15+ 3D Formats
Convert entire folders between STEP, IGES, STL, OBJ, 3MF, glTF, and more. Mesh repair, unit conversion, tessellation control, and assembly support. Desktop alternative to CAD Exchanger — one-time purchase, no $590/year subscription. Powered by OpenCascade.
All the 3D Formats You Need
Convert between STEP (AP203, AP214, AP242), IGES, STL (ASCII & binary), OBJ (with MTL), 3MF, VRML, DXF (3D), PLY, BREP, glTF/GLB, FBX, Collada (DAE), AMF, X3D, and OFF.
Professional 3D Conversion Tools
Everything you need to convert, repair, and prepare 3D models for manufacturing, printing, visualization, and archival — in batch.
Batch Format Conversion
Convert entire folders between any supported format. STEP to STL for 3D printing, IGES to STEP for CAD exchange, OBJ to 3MF for additive manufacturing. Drag-and-drop folders, set output format, click Convert. File naming templates with variables ({filename}, {format}, {date}).
Mesh Repair & Optimization
Automatic mesh healing fixes non-manifold edges, self-intersections, degenerate faces, and open holes. Reduce polygon count while preserving shape accuracy. Remove duplicate vertices and unreferenced geometry. Essential for preparing models for 3D printing — catch errors before they waste filament and machine time.
Unit & Coordinate System Conversion
Convert between mm, cm, inches, meters, and feet automatically during import. Fix axis orientation mismatches (Y-up to Z-up, left-hand to right-hand). Critical for multi-vendor CAD exchange where one team uses millimeters and another uses inches — a single wrong unit can ruin a $50,000 CNC run.
3D Preview & Inspection
Built-in 3D viewer with GPU-accelerated rendering. Inspect models before and after conversion. Wireframe, solid, and X-ray display modes. Measure distances, angles, and bounding boxes. Verify conversion quality without opening your CAD software.
Tessellation Control
Fine-tune STEP/IGES to mesh conversion with adjustable chord deviation, angular deflection, and maximum edge length. Preview tessellation quality in real-time. Low-poly output for web/game assets, high-poly for precision manufacturing. Quality presets: Draft, Standard, Fine, Ultra.
Metadata & Property Preservation
Preserve part names, colors, materials, and assembly structure during conversion. Extract metadata to CSV/JSON for BOM (Bill of Materials) generation. STEP AP214 product data, IGES entity labels, and STL solid names are all preserved where formats support them.
CLI & Automation
Full command-line interface for scripting batch conversions. Watched folder mode monitors an input directory and auto-converts incoming files. Profile files store conversion presets. JSON output for pipeline integration. Exit codes for CI/CD. Perfect for automated manufacturing workflows.
Assembly Support
Convert multi-part STEP and IGES assemblies preserving the part hierarchy. Export as a single merged mesh or individual parts in separate files. Assembly tree visualization shows all components with their transformations. Supports nested assemblies and external references.
Built-In Workflows for Every Industry
Pre-configured conversion pipelines tuned for specific industries and use cases. One click, production-ready output.
3D Printing / Additive Manufacturing
STEP/IGES to STL/3MF with mesh repair and unit conversion (mm). Process entire job queues in batch. Tessellation presets from Draft to Ultra Fine for optimal print quality.
CNC & Manufacturing
STEP/IGES to STL/OBJ/STEP with unit conversion and coordinate system alignment. Mesh repair ensures clean geometry for CNC workflows. Batch convert entire project folders.
Multi-Vendor CAD Exchange
Convert between vendor-neutral formats (STEP AP203/AP214) and native mesh formats. Fix unit mismatches, axis orientation, and assembly structure. Eliminate file-translation bottlenecks between engineering teams.
Web & Real-Time 3D
STEP/OBJ to glTF/GLB with tessellation control for web and game engines. Prepare CAD models for web configurators, AR experiences, and real-time 3D. Batch pipeline with CLI automation.
Archival & Documentation
Convert legacy formats to modern standards. IGES to STEP AP242 for long-term archival. Batch convert entire file libraries with consistent settings and naming conventions.
How 3D CAD Converter Compares
See how we stack up against CAD Exchanger, TransMagic, and Glovius.
| Feature | CAD Exchanger ($590/yr) | TransMagic ($2,000+) | Glovius (subscription) | 3D CAD Converter |
|---|---|---|---|---|
| Batch conversion | Limited | ✔ | ✘ | ✔ |
| Mesh repair | ✔ | ✔ | ✘ | ✔ |
| Unit conversion | ✔ | ✔ | ✘ | ✔ |
| 3D preview | ✔ | ✔ | ✔ | ✔ |
| CLI automation | ✔ | ✘ | ✘ | ✔ |
| Tessellation control | ✔ | Limited | ✘ | ✔ |
| Assembly support | ✔ | ✔ | ✔ | ✔ |
| Fully offline | ✔ | ✔ | ✔ | ✔ |
| Cost | $590/yr | $2,000+ | Subscription | One-time |
How It Works
Add Your Files
Drop 3D files or entire folders. 3D CAD Converter reads STEP, IGES, STL, OBJ, 3MF, glTF, and 15+ formats.
Configure
Choose output format, tessellation quality, unit system, and mesh repair options. Save presets for repeated jobs. Chain multiple operations in a pipeline.
Convert
Hit Start. Batch processing handles entire folders with per-file progress and ETA. Export individual parts or merged assemblies.
CLI & MCP Server
Automatisera 3D-formatkonvertering från skript, CI/CD-pipelines eller AI-agenter. CLI och MCP-server ingår i varje licens.
CLI-kommandon
| Kommando | Beskrivning |
|---|---|
cadconvert convert | Konvertera en enskild 3D-fil med format-, kvalitets-, enhets- och reparationsalternativ |
cadconvert batch | Batchkonvertera en katalog med parallell bearbetning och formatval |
cadconvert info | Inspektera en 3D-fil — format, vertex-/ytantal, begränsningsbox, enheter, monteringsstruktur |
cadconvert formats | Lista alla stödda in- och utdataformat |
cadconvert watch | Bevaka en mapp och autokonvertera nya filer när de anländer |
cadconvert register | Aktivera din licensnyckel |
cadconvert serve | Starta MCP-servern för AI-agentintegration (stdio-transport) |
# Konvertera STEP till STL med fin tessellering cadconvert convert model.step --format stl --quality fine # Batchkonvertering med mesh-reparation och enhetskonvertering cadconvert batch ./models --format obj --repair --units mm # Inspektera en 3D-fil cadconvert info assembly.step --json # Bevaka mapp för nya filer cadconvert watch ./incoming --format 3mf -o ./converted
MCP Server — AI-agentintegration
Kör cadconvert serve för att starta en Model Context Protocol-server. AI-agenter som Claude kan sedan konvertera, inspektera och fråga om 3D-filer via naturligt språk.
| MCP-verktyg | Beskrivning |
|---|---|
convert_cad | Konvertera en 3D-fil mellan alla stödda format med kvalitets-, enhets- och reparationsalternativ |
get_file_info | Hämta detaljerad filinformation — format, vertices, ytor, begränsningsbox, enheter, monteringsträd |
detect_format | Detektera formatet på en 3D-fil utan fullständig parsing |
list_formats | Lista alla stödda in- och utdataformat med funktioner |
// claude_desktop_config.json
{
"mcpServers": {
"cadconvert": {
"command": "cadconvert",
"args": ["serve"]
}
}
}
Claude Code Agent Skills
Installera CAD-konverterings-skill:en för att låta Claude Code använda din CLI direkt. Beskriv på engelska vad du vill — Claude kan alla kommandon, format och alternativ.
# Installera skill:en
claude skill install github:brunojanvier77/ContentaSoft/skills/contenta-cad
Efter installation, fråga Claude: "Convert all STEP files in D:\CAD to STL with fine tessellation and mm units"
What Engineers Say
Replaced our $590/year CAD Exchanger subscription. Same OpenCascade kernel, same quality, paid for itself in three weeks.
Batches our entire STEP library to STL for printing. The CLI slots right into our overnight build pipeline.
Handles 1 GB+ assemblies without choking. The 3D preview alone saved me from opening a dozen broken files.
Frequently Asked Questions
Yes. 3D CAD Converter provides the same core functionality — batch conversion between STEP, IGES, STL, OBJ, and 15+ formats with mesh repair, tessellation control, and assembly support — as a one-time purchase instead of CAD Exchanger's $590/year subscription.
STEP (AP203, AP214, AP242), IGES, STL (ASCII & binary), OBJ (with MTL materials), 3MF, VRML, DXF (3D), PLY, BREP, glTF/GLB, FBX, Collada (DAE), AMF, X3D, and OFF.
Yes — automatic mesh healing fixes non-manifold edges, self-intersections, degenerate faces, open holes, and duplicate vertices. Essential for preparing models for 3D printing.
Yes — multi-part STEP and IGES assemblies are converted with full part hierarchy preserved. You can export as a single merged mesh or as individual parts in separate files.
Yes — auto-converts between mm, cm, inches, meters, and feet. Also fixes axis orientation mismatches (Y-up to Z-up, left-hand to right-hand coordinate systems).
No — 3D CAD Converter is fully standalone. No AutoCAD, SolidWorks, Fusion 360, or other CAD license is needed. It includes its own 3D viewer for inspecting models.
Yes — full command-line interface for scripting batch conversions. Watched folder mode auto-converts incoming files. Profile files store conversion presets. JSON output and exit codes for CI/CD pipeline integration.
Yes — 100% offline. No cloud processing, no internet connection required, no file uploads. Your intellectual property stays on your machine.
One-time purchase — no subscription. All features are included. Sign up to be notified when we launch and get early-bird pricing.
Börja konvertera dina 3D-filer idag
Ladda ner den gratis testversionen eller köp en licens. Inget abonnemang, inget moln krävs.