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CAD Blocks

What are CAD blocks?

CAD blocks are named groups of objects that act as a single 2D or 3D object. You can use them to create repeated content such as drawing symbols, common components, and standard details. Blocks help you save time, maintain consistency, and reduce file size by reusing and sharing content rather than re-drawing it every time you need it.

Using blocks

With AutoCAD and AutoCAD LT software, you can create your own CAD blocks or choose from a large library of pre-made blocks, including:

  • Appliances
  • Doors and windows
  • Electrical fixtures
  • Electronic symbols
  • Fasteners
  • Furniture
  • Plumbing fixtures
  • Restaurant equipment

Dynamic blocks

You can add attributes or dynamic properties to CAD blocks so they can accommodate different text strings, shapes, or sizes. All CAD blocks can use the following properties:

  • Block unit
  • Color
  • Layer
  • Linetype
  • Linetype scale
  • Lineweight
  • Material
  • Name
  • Object name
  • Plot style
  • Position
  • Rotation
  • Scale X
  • Scale Y
  • Scale Z
  • Unit factor

A dynamic block has flexibility and intelligence. You can easily change a dynamic block reference in a drawing while you work, manipulating the geometry through custom grips or custom properties. Dynamic blocks let you adjust the block reference in place as needed, rather than search for another block to insert, or redefine the existing one.

Featured software using CAD blocks

Create or use CAD blocks with AutoCAD software

AutoCAD
Design every detail with AutoCAD software, one of the world’s leading 2D and 3D design platforms.
Subscribe or try for free

Create CAD drawings compatible with CAD blocks with AutoCAD LT software

AutoCAD LT
Edit, repurpose, and share drawings with AutoCAD LT software for 2D drafting and detailing.
Subscribe or try for free

Download CAD blocks and drawing symbols with Autodesk Seek

Autodesk Seek
Find, preview, and download BIM files, CAD blocks, drawings, and specs directly into your Revit or AutoCAD design session with this free* web service.
Try it now

* Free products are subject to the terms and conditions of the end-user license and services agreement that accompanies the software.

Free software for students & educators

We offer free Autodesk software for students and educators. Use the same 2D drafting and drawing software as top professionals around the world.
 

Free software for nonprofits

Are you a nonprofit or entrepreneur working to create positive impact through design? Learn more about our Technology Impact Program and see if you qualify for free design and engineering software.