How Do You Replace an Object in AutoCAD?

Replacing an object in AutoCAD is a key skill that every user should master. Whether you want to swap out an existing block, update a dimension style, or change the color of a specific object, knowing how to replace an object efficiently can save you considerable time and effort.

Step 1: Select the Object

To begin the replacement process, you need to select the object you want to replace. You can do this by using the appropriate selection tool from the AutoCAD toolbar or by typing “SELECT” in the command line and selecting the desired object. Once selected, the object will be highlighted.

Step 2: Access the Replace Command

With the object selected, navigate to the Modify panel in AutoCAD’s ribbon menu. Look for the “Replace” command or type “REPLACE” in the command line and press Enter.

Step 3: Specify Replacement Criteria

A dialog box will appear asking you to specify what type of replacement you want to perform. Here, you have several options:

  • Replace with Block: This option allows you to replace an object with a pre-defined block from your drawing or block library. Select this option if you want to swap out a specific object for a block of your choice.
  • Replace with Object: This option allows you to replace one type of object with another type within your drawing.

    For example, if you want to replace all circles with squares, choose this option.

  • Replace Color: This option enables you to replace objects based on their color properties. You can select objects of a specific color and replace them with another color.
  • Replace All: This option allows you to replace all instances of a specific object or property within your drawing. It offers a quick way to make widespread changes.

Step 4: Configure Replacement Settings

Once you’ve selected the desired replacement criteria, AutoCAD will prompt you to configure additional settings based on your specific choice. For example, if you’re replacing an object with a block, you’ll need to specify the block name and scale. If you’re replacing object types, you’ll need to define the Target object type.

Step 5: Preview and Confirm Replacement

After configuring the replacement settings, AutoCAD will display a preview of the changes that will be made before applying them. Take this opportunity to review the modifications and ensure they align with your intentions.

If everything looks good, click the “Replace” or “OK” button to confirm and execute the replacement process. AutoCAD will replace the selected objects according to your specified criteria.


  • Save a Backup: Before performing any replacements, it’s always a good idea to save a backup copy of your drawing file. This way, if something goes wrong or you’re unhappy with the changes, you can revert back to the original version.
  • Use Selection Filters: To streamline the selection process and avoid accidentally selecting unwanted objects, consider using selection filters in AutoCAD.

    These filters allow you to specify specific criteria for selecting objects based on their properties.

  • Create Custom Blocks: If you frequently find yourself replacing objects with custom blocks, consider creating a library of commonly used blocks. This can save time in selecting and configuring replacements.

By following these steps, you can easily replace objects in AutoCAD and make the necessary modifications to your drawings efficiently. Remember to always exercise caution when making changes and to save backups of your files to avoid any potential loss of data.