aut

.autAutoCAD Drawing

Autodesk · 1982

Developer
Autodesk
Category
Documents
MIME Type
application/x-autocad-drawing
First Released
1982
Open Format
No
File Signature
Not a commonly documented or stable magic byte sequence.
At a Glance
.aut
AutoCAD Drawing

.AUT files are primarily used by Autodesk's AutoCAD software to store detailed 2D and 3D technical drawings and designs.

Reviewed on July 15, 2026
Compression
Varies
Transparency
N/A
Editability
High (within AutoCAD)
Best for
CAD Designs

Key Features

  • Stores 2D and 3D vector graphics.
  • Includes layers, text, dimensions, and geometric data.
  • Proprietary binary format developed by Autodesk.
  • Essential for professional CAD workflows.

Best For

  • Precise technical drafting and design.
  • Collaborating on CAD projects with AutoCAD users.
  • Storing complex 2D and 3D geometric data.
  • Professional engineering and architectural workflows.

Less Ideal For

  • General image viewing or editing (use JPG, PNG).
  • Simple document creation (use DOCX, PDF).
  • Web graphics (use SVG, PNG).
  • Animation or video content.

Common Use Cases

  • Creating architectural blueprints.
  • Designing mechanical parts and assemblies.
  • Mapping and surveying.
  • Engineering and construction planning.
  • Sharing technical designs between collaborators.

How to Open It

  1. The primary way to open .AUT files is with Autodesk AutoCAD software.
  2. Consider Autodesk DWG TrueView, a free viewer for DWG and DXF files (which .AUT is related to).
  3. Some other CAD software may offer import options, but compatibility isn't guaranteed.
  4. For viewing on mobile, look for dedicated CAD viewer apps that support AutoCAD formats.

What is a .aut file?

The .AUT file extension is primarily associated with AutoCAD, a leading computer-aided design (CAD) software. These files store 2D and 3D design data, including geometric information, layers, text, dimensions, and other drafting elements. They are essential for architects, engineers, and designers to create and share technical drawings and blueprints. While primarily used by AutoCAD, other CAD applications might offer import/export capabilities, though compatibility can vary. Understanding these files is key for professionals working in design and manufacturing fields.

Programs That Open .aut Files

PlatformProgram
WindowsAutodesk AutoCADPaidOfficial
Autodesk DWG TrueViewFreeOfficial
macOSAutodesk AutoCAD for MacPaidOfficial

How to Convert .aut Files

FormatMethod
.DWGSave As within AutoCAD, Autodesk DWG TrueView
.DXFSave As within AutoCAD, Conversion tools
.PDFPlot/Export within AutoCAD, DWG TrueView

Common Problems with .aut Files

⚠️ Cannot open .AUT file without AutoCAD.
Use Autodesk DWG TrueView for viewing or try importing into compatible CAD software.
⚠️ Compatibility issues with older versions.
Ensure both software and file versions are compatible, or use a universal CAD exchange format like DXF.

Frequently Asked Questions

Is .AUT the same as .DWG?

While both are AutoCAD formats, .DWG is the primary native format. .AUT is less common and often refers to older or specific drawing types, though both store design data.

Can I open an .AUT file in a web browser?

Not directly. You would need a web-based CAD viewer or service that supports importing .AUT or related AutoCAD formats.

What is the best way to share AutoCAD drawings?

Commonly shared formats include .DWG for AutoCAD users, .DXF for broader CAD compatibility, and .PDF for non-editable viewing.

Technical Details

AUT files are proprietary binary files created by AutoCAD. They contain comprehensive vector-based geometric data, allowing for precise representation of designs. While they store raw design information, they can also embed metadata and user-defined information. The exact internal structure can be complex and is not publicly documented, making direct editing without CAD software challenging.

Did You Know?

The .AUT extension is less commonly encountered than the primary .DWG format for AutoCAD.
AutoCAD was one of the first CAD programs to run on personal computers, revolutionizing design.

Security Information

As a proprietary binary format from Autodesk, .AUT files themselves do not typically pose significant security risks unless they are embedded within or delivered via a malicious executable or phishing attempt. Always ensure you download CAD files from trusted sources.

Related Extensions