What Is Smart Dimension SolidWorks?

What Is Smart Dimension SolidWorks?

Smart Dimension is a powerful tool in SolidWorks that allows users to easily and accurately define dimensions in their 3D models. With Smart Dimension, you can quickly add and modify dimensions, making it an essential feature for precise design and engineering work. Let’s take a closer look at how to use Smart Dimension effectively.

Adding Dimensions

To add dimensions using Smart Dimension, follow these steps:

  1. Select the desired feature or sketch entity to dimension.
  2. Go to the Annotations tab on the Command Manager.
  3. Click on the Smart Dimension tool.
  4. Select the edges or points that you want to dimension. SolidWorks will automatically suggest possible dimensions based on your selection.
  5. If the suggested dimension is what you need, simply click on it to apply. Otherwise, input your desired value manually.

Note: You can also use Smart Dimension to add angular dimensions by selecting appropriate sketch entities or edges.

Modifying Dimensions

If you need to modify an existing dimension, follow these steps:

  1. Select the dimension you want to modify by clicking on it. The selected dimension will be highlighted in blue.
  2. You will see small handles appear on the dimension line and extension lines.

    Use these handles to drag and reposition the dimension as needed.

  3. If you want to change the numerical value of the dimension, double-click on it. A text box will appear where you can enter your desired value. Press Enter or click outside of the text box to apply the changes.

Advanced Functionality

Smart Dimension offers additional functionality beyond basic dimensioning. Here are some advanced features you can utilize:

Aligned and Angular Dimensions

In addition to linear dimensions, Smart Dimension allows you to add aligned and angular dimensions. Aligned dimensions measure the distance between two points or edges, regardless of their orientation. Angular dimensions measure the angle between two lines or edges.

Dimension Settings

You can customize various settings for Smart Dimension to suit your needs. Right-click on any dimension and select Edit Dimension. This will open the Dimension PropertyManager, where you can modify properties such as font size, arrow style, precision, and more.

Equations and Relations

If you need to create complex relationships between dimensions or incorporate mathematical equations, Smart Dimension supports these advanced capabilities. By using equations and relations, you can create parametric models that update automatically based on defined rules.

  • Note: Equations and relations are more advanced topics that require a deeper understanding of SolidWorks functionalities.


In summary, Smart Dimension is a fundamental tool in SolidWorks that enables precise dimensioning in 3D models. By adding and modifying dimensions with ease, users can ensure accurate designs that meet specific requirements. With its advanced functionality and customization options, Smart Dimension empowers engineers and designers to create complex parametric models efficiently.