How to Open .DWG Files on Windows, Mac, and Online

What opens a .DWG file

AutoCAD, made by Autodesk, is the standard program that opens .DWG files — it's the format AutoCAD created and still controls. If you have AutoCAD installed, double-clicking a .DWG file will open it there. But AutoCAD costs money (a subscription starting around $680 per year), so most people use one of several free or cheaper alternatives instead.

The main free options are Autodesk's own DWG TrueView (view-only, Windows only), LibreCAD (free, editable, Windows and Mac), Inkscape (free, editable, all platforms), and online viewers like Autodesk's web viewer (free, view-only, any browser). Paid alternatives include DraftSight (around $120 one-time, Windows and Mac) and CorelCAD (around $99 one-time, Windows and Mac). Each has different strengths depending on whether you need to view, edit, or work with complex drawings.

Key Takeaways

AutoCAD is the native program for .DWG files but costs $680 per year; free viewers like DWG TrueView and Autodesk's web viewer let you see files without paying.
LibreCAD and Inkscape are free programs that can both view and edit .DWG files on Windows and Mac, though they may not handle every advanced AutoCAD feature perfectly.
Online viewers in your web browser require no installation and work on any device, but they are view-only and depend on your internet connection.
Paid alternatives like DraftSight and CorelCAD cost $99 to $120 one-time and offer better AutoCAD compatibility than free tools if you edit regularly.

Free programs that view .DWG files

DWG TrueView is Autodesk's own free viewer. It opens .DWG files in full detail and lets you zoom, pan, and measure, but you cannot edit or save changes. It runs on Windows only. Download it from Autodesk's website, install it, and .DWG files will open in TrueView by default. It's the fastest option if you only need to look at drawings.

Autodesk's web viewer works in any browser on any device — Windows, Mac, iPad, or phone. Go to viewer.autodesk.com, upload or drag in a .DWG file, and view it immediately. No account is required for viewing. You cannot edit, but the viewer handles most drawing types well and is useful for sharing files with people who don't have any CAD software. The web viewer is also the best way to check whether a file is corrupted before you try opening it in a desktop program.

Free programs that edit .DWG files

LibreCAD is a free, open-source CAD program that runs on Windows, Mac, and Linux. It opens .DWG files and lets you draw, edit, and save changes. It handles 2D drawings well but does not support 3D models. Download it from librecad.org, install it, and open .DWG files as you would in any program. The interface is simpler than AutoCAD, so it has a gentler learning curve if you're new to CAD.

Inkscape is a free vector graphics editor that can open .DWG files and edit them as vector drawings. It's stronger for graphic design and illustration than for technical CAD work, but it works on Windows, Mac, and Linux. If your .DWG file is mostly lines and shapes rather than complex technical geometry, Inkscape is a solid choice. Download it from inkscape.org and open .DWG files through the File menu.

Paid programs with better AutoCAD compatibility

DraftSight costs around $120 as a one-time purchase (or $99 per year for a subscription) and runs on Windows and Mac. It's designed to mimic AutoCAD's interface and commands closely, so if you know AutoCAD, DraftSight feels familiar. It handles .DWG files reliably and supports both 2D and 3D work. It's a good middle ground if you edit .DWG files regularly but don't need AutoCAD's full feature set.

CorelCAD costs around $99 one-time and also runs on Windows and Mac. Like DraftSight, it aims to be AutoCAD-compatible and handles .DWG files well. It includes both 2D and 3D tools. The main difference between DraftSight and CorelCAD is interface design and which specific features each emphasizes — try the free trials of both if you're deciding between them.

Opening .DWG files on Mac specifically

Mac does not have a native .DWG viewer built in, so you need to install something. DWG TrueView is Windows-only, so that option is not available. Your best free choices on Mac are LibreCAD, Inkscape, or Autodesk's web viewer (which works in any browser). If you need to edit regularly, DraftSight or CorelCAD are the paid options designed for Mac.

AutoCAD itself also runs on Mac if you have a subscription. Some older versions of AutoCAD for Mac are no longer supported, so check Autodesk's website to confirm your version is current before installing. You can also use the web viewer on any Mac without installing anything — just open it in Safari, Chrome, or Firefox.

How to set a default program for .DWG files

On Windows, right-click a .DWG file, select "Open with," then choose the program you want to use. At the bottom of the menu, check the box that says "Always use this app to open .DWG files" and click the program name. From then on, double-clicking .DWG files will open them in that program.

On Mac, right-click a .DWG file and select "Open With," then choose your program. To make it the default, select the file, press Command+I to open Info, find "Open With," choose your program from the dropdown, and click "Change All." This sets that program as the default for all .DWG files on your Mac.

When to use each option

Use DWG TrueView if you only view .DWG files and want the fastest, most reliable viewer on Windows. Use Autodesk's web viewer if you need to view files on any device or share them with others without installation. Use LibreCAD or Inkscape if you edit .DWG files occasionally and want to avoid paying. Use DraftSight or CorelCAD if you edit regularly and want AutoCAD-like commands and reliability. Use AutoCAD itself only if you work with complex 3D models, advanced features, or need to collaborate with teams that require AutoCAD-native files.

For most people, starting with the free web viewer is the right choice — it requires no installation and works everywhere. Once you know whether you need to edit and how often, you can decide whether a free desktop program or a paid option makes sense for your workflow.

Frequently Asked Questions

Can I open a .DWG file in Microsoft Word or Google Docs?

No. Word and Docs are document editors, not CAD programs, and they do not recognize .DWG format. You must use a CAD viewer or editor. If you need to include a .DWG drawing in a document, export it from your CAD program as a PDF or image first, then insert that into Word or Docs.

What if a .DWG file won't open in the program I'm using?

The file may be corrupted, or it may have been created in a newer version of AutoCAD than your program supports. Try opening it in Autodesk's web viewer first to confirm the file itself is readable. If it opens there, try a different desktop program. If it fails in the web viewer too, the file may be damaged and you may need to ask the person who created it for a fresh copy.

Is there a .DWG viewer for my phone or tablet?

Yes. Autodesk makes a free app called Autodesk Viewer for iPhone, iPad, and Android that opens .DWG files. You can also use Autodesk's web viewer (viewer.autodesk.com) in your phone's browser. Both are view-only. For editing on mobile, options are limited — most mobile CAD apps are designed for sketching or annotation rather than full drawing work.

Do I need to convert .DWG to another format to open it?

No. Any program that supports .DWG will open it directly. Conversion is only necessary if you want to use the drawing in a different type of program — for example, converting to PDF to embed in a document, or to SVG to edit in a graphics program. But to view or edit the .DWG itself, no conversion is needed.

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