What Can Open DWG Files: Software and Tools That Work

What Can Open DWG Files

DWG files are the native drawing format for AutoCAD, but they can be opened by a broad set of programs beyond Autodesk's ecosystem. These range from full CAD suites and free viewers to web-based tools and even mobile apps, depending on the level of editing you need.

Native and Full-CAD Solutions

The most complete DWG support comes from tools built around the format itself.

• AutoCAD — the original creator of DWG; offers full read and write support with no loss of fidelity.
• AutoCAD LT — a lighter 2D-focused variant that handles DWG editing at a lower price point.
• BricsCAD — a direct AutoCAD alternative with native DWG compatibility and a similar interface.
• ZWCAD — another AutoCAD-compatible CAD platform that reads and writes DWG natively.
• GstarCAD — a lower-cost CAD editor with strong DWG support for 2D drafting.

Free and Low-Cost Viewers

If you only need to view, measure, or markup a DWG file, several free options exist.

• AutoCAD Web App — Autodesk's browser-based viewer lets you open DWG files with a free Autodesk account.
• DWG TrueView — a free desktop viewer from Autodesk that also includes DWG TrueConvert for format migration.
• LibreCAD — an open-source 2D CAD program that can import and display DWG files, though write support may be limited.
• FreeCAD — supports DWG import via its OpenCASCADE backend, useful for basic viewing and conversion.

Web and Cloud-Based Tools

Several platforms let you open DWG files in a browser without installing desktop software.

• Autodesk Fusion 360 — supports DWG import for use in manufacturing and design workflows.
• Onshape — a cloud CAD tool that can ingest DWG files for viewing and lightweight editing.
• A360 Viewer (Autodesk) — a cloud viewer for sharing and reviewing DWG drawings online.
• ShareCAD — a web-based viewer that supports DWG alongside many other CAD formats.

Mobile and Niche Options

For on-the-go access, a few mobile apps and specialized tools can open DWG files.

• AutoCAD mobile app — Autodesk's iOS and Android app for viewing and light markup of DWG files.
• DWG FastView — a lightweight mobile and desktop viewer optimized for large DWG drawings.
• SolidWorks — can import DWG files for use as reference geometry in mechanical models.
• SketchUp — supports DWG import, making it a common choice for architects bringing floor plans into 3D modeling.

How to Choose

The right tool depends on whether you need full editing, precise viewing, or simple sharing. For fidelity, stick with AutoCAD or a direct alternative like BricsCAD. For quick checks, a free viewer or the web app is usually enough.