AutoCAD

How to Change Text Height in AutoCAD?

Understanding Text Height in AutoCAD

Text height plays a crucial role in enhancing readability and ensuring accuracy in your AutoCAD drawings. Adjusting text height can sometimes be a challenge if the settings are not correctly configured. Below, you will find a comprehensive guide to help you effectively change and manage text height in AutoCAD.

Changing the Default Text Height

  1. Open the Application: Launch AutoCAD and open your drawing.

  2. Access Text Styles: Navigate to the main menu and select Settings followed by Text Styles. This action will open the Text Styles dialog box.

  3. Select a Text Style: In the dialog, you will see a list of existing text styles. Click on the text style you wish to modify to highlight it.

  4. Modify Height Setting: Look for the ‘Height’ setting in the dialog. To change the default text height, set this value to 0. This adjustment allows text to inherit height properties from the dimension settings instead.

  5. Save Changes: Click OK to confirm your changes and exit the dialog. The new text height should now be applied throughout your drawing.

Unlocking Text Height

  1. Open Text Styles: As before, go to Settings and then Text Styles.

  2. Choose the Relevant Style: Select the text style that has a locked height setting.

  3. Adjust Height to Zero: Ensure the ‘Height’ value is set to 0. This unlocks the text height, allowing you to make adjustments as necessary.

  4. Confirm and Exit: Click OK to save your changes. Now, you should be able to modify text height freely.

Changing Font Size in AutoCAD 2025

  1. Open the Data View: In your working environment, find the Data View window. Right-click on the empty square in the top-left corner of the database table.

  2. Select Formatting Options: Choose Format from the context menu.

  3. Choose Desired Font Settings: Adjust the font settings according to your preference.

  4. Finalize the Changes: After selecting the new font size, click OK to apply and exit.

Modifying Text Thickness

  1. Initiate QSELECT Command: Type QSELECT in the command line and hit Enter.

  2. Select Object Types: Choose either MText or Text as the object type for which you want to change thickness.

  3. Set Properties: In the properties section, select Position Z and choose the “Not Equal” operator.

  4. Apply the Value: Enter 0 as the value and hit OK.

  5. Update Z Position: In the Properties palette, change the Z Position to 0.

Reasons for Inability to Change Text Height

  • Fixed Text Style: If the text height input box appears greyed out, it might indicate that the specific text style in use has a fixed height attributed to it.

  • Checking Text Style Settings: Use the command STYLE, then highlight the text style. If the height is set to any value other than 0, it will override your height changes. Adjust this setting back to 0 and confirm.

Standard Text Height in AutoCAD

Most industries have established standard text heights for plotting. Typically, a height of 1/8 inch (3 mm) is common for annotations. Smaller values, such as 3/32 inch (2.5 mm), may be used in space-constrained areas.

Resizing Text in Specific Layers

  1. Select the Layer: Open the Display Manager and find the layer containing the text you wish to adjust.

  2. Access Style Settings: Click on Style to open the Style Editor.

  3. Specify Size Context: In the Style Annotation Text dialog, indicate the type of units you are using, then select the appropriate unit sizes for your text context.

Frequently Asked Questions

1. How can I convert text to a different font without changing height?
To change the font without altering text height, go to the Text Style dialog, then select your desired font while keeping the height setting at 0.

2. Why does my dimension text appear too small?
Check the text height settings in the Dimension Manager under the text tab. Adjust the text height to a larger value that suits your drawing requirements.

3. Is it possible to flatten text in AutoCAD?
Yes, by entering the FLATTEN command, you can select all dimensions to flatten them to a single plane, making adjustments easier.

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.