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
Automatize a conversão de formatos 3D a partir de scripts, pipelines CI/CD ou agentes de IA. CLI e servidor MCP incluídos em todas as licenças.
Comandos CLI
| Comando | Descrição |
|---|---|
cadconvert convert | Converter um ficheiro 3D individual com opções de formato, qualidade, unidade e reparação |
cadconvert batch | Conversão em lote de um diretório com processamento paralelo e seleção de formato |
cadconvert info | Inspecionar um ficheiro 3D — formato, contagem de vértices/faces, caixa delimitadora, unidades, estrutura de assemblagem |
cadconvert formats | Listar todos os formatos de entrada e saída suportados |
cadconvert watch | Monitorizar uma pasta e converter automaticamente novos ficheiros à medida que chegam |
cadconvert register | Ativar a sua chave de licença |
cadconvert serve | Iniciar o servidor MCP para integração de agentes de IA (transporte stdio) |
# Converter STEP para STL com tesselação fina cadconvert convert model.step --format stl --quality fine # Conversão em lote com reparação de malha e conversão de unidades cadconvert batch ./models --format obj --repair --units mm # Inspecionar um ficheiro 3D cadconvert info assembly.step --json # Monitorizar pasta para novos ficheiros cadconvert watch ./incoming --format 3mf -o ./converted
MCP Server — Integração de agentes de IA
Execute cadconvert serve para iniciar um servidor Model Context Protocol. Agentes de IA como Claude podem então converter, inspecionar e consultar ficheiros 3D através de linguagem natural.
| Ferramenta MCP | Descrição |
|---|---|
convert_cad | Converter um ficheiro 3D entre todos os formatos suportados com opções de qualidade, unidade e reparação |
get_file_info | Obter informações detalhadas do ficheiro — formato, vértices, faces, caixa delimitadora, unidades, árvore de assemblagem |
detect_format | Detetar o formato de um ficheiro 3D sem análise completa |
list_formats | Listar todos os formatos de entrada e saída suportados com as suas capacidades |
// claude_desktop_config.json
{
"mcpServers": {
"cadconvert": {
"command": "cadconvert",
"args": ["serve"]
}
}
}
Claude Code Agent Skills
Instale o skill de conversão CAD para permitir que o Claude Code use a sua CLI diretamente. Descreva em inglês o que pretende — Claude conhece todos os comandos, formatos e opções.
# Instalar o skill
claude skill install github:brunojanvier77/ContentaSoft/skills/contenta-cad
Após a instalação, peça ao 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.
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