AutoCAD

How to Change Dimension Size in AutoCAD 2020?

Understanding Dimension Size Modification in AutoCAD 2025

AutoCAD provides users with robust tools to manage dimension sizes for clarity and accuracy in design. Adjusting dimension sizes is essential for ensuring that the information conveyed in your drawings is easily interpretable. Below are detailed steps to modify dimension sizes in AutoCAD 2025.

Accessing Dimension Styles

  1. Open the Dimension Style Manager: Navigate to the Home tab and click on the Annotation panel, then select the Dimension Style option. This will launch the Dimension Style Manager.

  2. Creating a New Style: Click on the New button within the Dimension Style Manager. This step allows you to start with a fresh style based on existing settings that you can customize.

  3. Name the New Style: In the Create New Dimension Style dialog box, assign a name to your new style for easy identification later. After naming, click Continue to proceed to the next stage.

Customizing Dimension Settings

  1. Edit Dimension Properties: You will enter the New Dimension Style dialog box. This is where you personalize various aspects of your dimension style. Click through the different tabs such as Lines, Arrows, and Text, and make necessary adjustments according to your preferences.

  2. Adjusting Text Size: Head to the Text tab within the New Dimension Style dialog box. Here you can select a text style and specify the text height. If your current text style doesn’t have a fixed height, enter the desired size in the Text Height box.

  3. Finalizing Changes: After making adjustments, click OK to save the new dimension style. You can exit the Dimension Style Manager by clicking Close.

Applying the New Dimension Style

  1. Select the Dimensions: In your drawing, select the dimensions that you want to modify using the new style. Hold the Shift key to select multiple dimensions if necessary.

  2. Apply the Updated Style: Access the Properties palette by right-clicking and choosing Properties. In the Properties window, find the Dimension Style option and change it to the new style that you have just created.

Verifying Your Changes

  1. Check the Display: Zoom in and take a look at the dimensions in your drawing. Ensure that they are adjusted to the new size you set. If text appears small, revisit the dimension style settings to make further adjustments.

FAQs

1. How do I ensure my dimension text displays at a readable size?
Check the text height setting in your dimension style. If it’s set too small, increase it to a more appropriate value. Additionally, verify that the text style used has a fixed height.

2. Can I change the dimension units in AutoCAD?
Yes, you can adjust the dimension units by accessing the Dimension Style Manager and modifying the Primary Units tab. You can change the units to millimeters, centimeters, or inches as needed.

3. What should I do if my dimensions are not showing up in the drawing?
If dimensions are invisible, check if the layer containing the dimensions is turned off. Also, ensure that the text height is not set too small for the current scale of your drawing.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.