Format Guide
The native format of AutoCAD — the most widely used CAD software in the world
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| Extension | .dwg |
|---|---|
| Full name | AutoCAD Drawing |
| Geometry type | 2D/3D mixed (ACIS solids, meshes, wireframe) |
| Open standard | No (proprietary, Autodesk) |
| Supports color | Yes |
| Supports assemblies | Yes (xrefs, blocks) |
| Supports materials | Yes |
DWG (Drawing) is the proprietary binary file format used by AutoCAD, the dominant software for computer-aided design. Created by Autodesk, DWG files store 2D and 3D design data including geometry, metadata, and associated resources. With over 12 million users worldwide, DWG is the de facto standard in architecture, engineering, and construction (AEC). However, AutoCAD subscriptions cost $1,975/year, making simple file conversion prohibitively expensive for many professionals.
Floor plans, building sections, structural details, and site plans. DWG is the standard deliverable format for architectural firms and contractors worldwide.
Part drawings, assemblies, manufacturing specifications, and technical documentation. DWG files are used throughout the product development lifecycle.
Road layouts, utility drawings, topographic surveys, and land subdivision plans. Civil engineers rely on DWG for municipal and infrastructure projects.
AutoCAD ($1,975/year), BricsCAD ($756/perpetual), DraftSight ($99/year), FreeCAD (free), LibreCAD (free, 2D only). Most alternatives can open DWG but may not support all features.
3D CAD Converter reads DWG files and batch converts them to STL, OBJ, glTF, and 15+ other 3D formats — without requiring AutoCAD. Drag and drop entire folders of DWG files for instant batch conversion with progress tracking.
| Tool | Price | Model |
|---|---|---|
| CAD Exchanger | Subscription (annual renewal) | |
| Spin 3D | Subscription (annual renewal) | |
| 3D CAD Converter | $179 | ✔ Pay once, own forever |