Find and compare CAD & BIM software. Access objective reviews, comparisons, and 400+ free engineering utilities.
CGCADGuide.tools
3D Solid & B-Rep Standard0 verified tools

Software That Opens & Edits CATPART Files (0 Tools, 2026)

CATPart and CATProduct are the native geometric modeling formats of Dassault Systèmes CATIA, the high-end PLM software suite dominant in the global aerospace, defense, and automotive OEM sectors. A CATPart stores mathematically perfect solid models, complex multi-patch Class-A surfaces, functional tolerances, and tooling definitions built on Dassault's proprietary CGM (Convergence Geometric Modeler) engine. A CATProduct manages the assembly hierarchies, positioning coordinates, and links to external parts. Because of their advanced mathematical structure, opening these files directly in mid-range CAD engines requires certified translation layers.

Instant CATPART Engineering Utilities

Convert, Compress & Inspect CATPART Files Online

Universal File Compressor →
B-Rep Exchange

SLDPRT / CATPart / NX to STEP

Lossless neutral ISO 10303-21 B-Rep solid assembly conversion.

Launch Tool →
Size Optimizer

STEP Assembly Defeature & Reducer

Strip internal fasteners & threads to shrink 300MB+ STEP files.

Launch Tool →
PMI Standard

STEP AP214 vs AP242 Comparator

Compare automotive AP214 vs Model-Based Definition AP242.

Launch Tool →

No tools currently tagged with CATPART support in our catalog. Browse the full directory to find compatible tools by category.

CATIA CGM Kernel Geometric Specifications
Standard 1CGM Kernel Precision: CATPart models are created on Dassault's Convergence Geometric Modeler, optimized to handle advanced aeronautical surface deviations.
Standard 2Hybrid Modeling Containers: A single CATPart file hosts precise wireframe, complex NURBS styling surfaces, and structural manufacturing solid bodies.
Standard 3Backward Translation Limits: CATIA V5 is file-dependent. Models compiled on newer releases cannot be opened in older releases without using utility utilities.

Frequently asked

Why do CATIA files require specialized translation compared to SolidWorks files?
Mid-range CAD tools like SolidWorks use the Parasolid kernel. CATIA uses the proprietary CGM engine. Translating CATPart geometry to Parasolid requires mapping complex NURBS face continuities (G2/G3). Without a certified CGM-to-Parasolid translator, the imported model often exhibits missing faces, open edges, or self-intersecting surfaces.
What is the difference between CATIA V5 and V6 file structures?
CATIA V5 uses standard file-based document trees (.CATPart and .CATProduct saved on local drives). CATIA V6 (and 3DEXPERIENCE) uses a database-driven architecture, saving design components as discrete database entries, allowing for real-time collaborative concurrent design without file locking.

Need a specific conversion?

Our interactive CAD Matchmaker filters all 0 CATPART-compatible platforms against your budget, hardware configuration, and precise parametric drafting needs.

Launch Matchmaker →

Other file formats