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Create a block in AutoCAD

Creating a block is a basic task that every AutoCAD user should know. But even if you’ve been using blocks for years, I think that you’ll find the links at the end to more advanced tips helpful. Put together, these tips make up an advanced tutorial on blocks.

What is an AutoCAD block?

A block is simply a collection of objects (it could be one object) that has a name. Blocks have several advantages:

  • You can insert them again and again, saving time. In fact, you can insert them into other drawings as well.
  • A block uses less electronic space than individual objects, so your drawing file is smaller.
  • By updating a block’s definition, you can update all the blocks in the drawing.

Note: Dynamic blocks are blocks that have added parameters that function in certain defined ways. Look at the end of this post for links to some posts on dynamic blocks.

Check out this free dynamic block tutorial

Plus get free tips in our AutoCAD Tips Newsletter!

Dynamic Block TutorialGet a free tutorial on creating a complete dynamic block, including a drawing to practice on. You'll make a movable chair, resizable desk, and more. PLUS, the highly-acclaimed AutoCAD Tips Newsletter will keep your skills up to date!

How do you create a block?

To create a block, follow these steps:

  1. Draw the objects that you want in the block.autocad_tips_create-a-block-in-autocad-1
  2. Choose Home tab> Block panel> Create to start the BLOCK command. The Block Definition dialog box opens.
  3. Type a name in the Name text box. The name can have spaces.
  4. You need to specify a base point. That’s the point at which you’ll insert the block. In the Base Point section, click Pick Point. Be sure to use an object snap for accuracy! You’ll immediately be returned to the dialog box.
  5. In the Objects section, click the Select Objects button. Select the objects and press Enter to return to the dialog box. Tip: You can select the objects before using the command and they’ll show up in the dialog box.
  6. Just below, choose Retain, Convert to Block, or Delete. These options control what happens after you create the block.
  7. In the Behavior section, you can make a block Annotative (more info here), force it to scale uniformly and choose whether to allow exploding.
  8. In the Settings area, choose the block unit. You can choose Unitless but if you choose a unit, AutoCAD will try to scale the block appropriately when you insert it into another drawing. You can also add a hyperlink if you want.
  9. Finally, you can add a description in the Description box. A description is helpful in the DesignCenter, when you want to insert the block from another drawing.
  10. Click OK to complete the box. If you chose Delete, the objects disappear. You can use the OOPS command to bring them back.

Next time, I’ll cover the process of inserting a block.

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Related tips on AutoCAD blocks:

Those should keep you busy for a while, but there are more! Go to my blog’s home page and enter blocks in the Search box to find them all.

Do you have any tips for creating blocks? Leave a comment!



13 comments to Create a block in AutoCAD

  • Lisp Cad|VBA |Download Autocad Blog » Blog Archive » Insert a block in AutoCAD

    […] a previous post, I covered how to create a block in AutoCAD. Here I explain how to insert a […]

  • sam

    Thanks alot Ellen…..

  • Norman A. Bodino


  • james coutee

    Ellen I must say all your tips are very helpful. Thanks a bunch

  • deb

    i have created my blocks and they worked just fine, until today. It will only let me use a few of the blocks but not all. why is this?

  • Sugi

    Is there any way to create a block that you cannot use object snaps on?

  • Colin

    Yes before creating the block lock the attributes and this will turn the grips off.

  • you need to specify a base point

  • Adam

    Oh hey thanks, my final exam was open book and this (and others on the site) will be a good reference. Cheers

  • Cyborgtheo

    Where does our blocks save to where? under autodesk folder?
    I like create blocks where I save to so I will have a list of them.

  • Cyborgtheo

    I just felt embarrassed that I must saw an answer flew over my head from another tips. Thanks Ellen

  • Thanks a lot Ellen Finkelstein for showing how to create a block in autocad. I am learning autocad. Your post helped me a lot to create block.Keep sharing..

  • Samotita

    Greetings from Florida! I’m bored to tears at work so I decided to borwse your site on my iphone during lunch break. I really like the knowledge you present here and can’t wait to take a look when I get home. I’m surprised at how quick your blog loaded on my cell phone .. I’m not even using WIFI, just 3G .. Anyways, awesome blog!

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