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 Batch 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 Batch 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 Batch 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
スクリプト、CI/CDパイプライン、またはAIエージェントから3Dフォーマット変換を自動化。CLIとMCPサーバーはすべてのライセンスに含まれています。
CLIコマンド
| コマンド | 説明 |
|---|---|
cadconvert convert | フォーマット、品質、単位、修復オプションを指定して単一の3Dファイルを変換 |
cadconvert batch | 並列処理とフォーマット選択でディレクトリをバッチ変換 |
cadconvert info | 3Dファイルを検査 — フォーマット、頂点/面数、バウンディングボックス、単位、アセンブリ構造 |
cadconvert formats | サポートされているすべての入出力フォーマットを一覧表示 |
cadconvert watch | フォルダを監視し、新しいファイルが到着したら自動変換 |
cadconvert register | ライセンスキーを有効化 |
cadconvert serve | AIエージェント統合用のMCPサーバーを起動（stdioトランスポート） |
# STEPをSTLに精密テセレーションで変換 cadconvert convert model.step --format stl --quality fine # メッシュ修復と単位変換でバッチ変換 cadconvert batch ./models --format obj --repair --units mm # 3Dファイルを検査 cadconvert info assembly.step --json # フォルダの新しいファイルを監視 cadconvert watch ./incoming --format 3mf -o ./converted
MCP Server — AIエージェント統合
cadconvert serveを実行してModel Context Protocolサーバーを起動します。ClaudeなどのAIエージェントが自然言語で3Dファイルを変換、検査、クエリできるようになります。
| MCPツール | 説明 |
|---|---|
convert_cad | 品質、単位、修復オプションを使用して、サポートされているすべてのフォーマット間で3Dファイルを変換 |
get_file_info | 詳細なファイル情報を取得 — フォーマット、頂点、面、バウンディングボックス、単位、アセンブリツリー |
detect_format | 完全な解析なしで3Dファイルのフォーマットを検出 |
list_formats | 機能付きのサポートされているすべての入出力フォーマットを一覧表示 |
// claude_desktop_config.json
{
"mcpServers": {
"cadconvert": {
"command": "cadconvert",
"args": ["serve"]
}
}
}
Claude Code Agent Skills
CAD変換スキルをインストールして、Claude Codeから直接CLIを使用できるようにします。英語でやりたいことを説明してください — Claudeはすべてのコマンド、フォーマット、オプションを把握しています。
# スキルをインストール
claude skill install github:brunojanvier77/ContentaSoft/skills/contenta-cad
インストール後、Claudeに依頼: "Convert all STEP files in D:\CAD to STL with fine tessellation and mm units"
Frequently Asked Questions
Yes. 3D CAD Batch 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 Batch 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.