How to Change Units AutoCAD 2018?

Understanding Unit Changes in AutoCAD 2025

Changing Units in AutoCAD 2025 to Meters

To switch the units in AutoCAD to meters, follow these detailed steps:

1. Create a New Drawing: Launch AutoCAD and create a new blank drawing, ensuring you start with the right settings.

2. Access the Units Command: Type UNITS in the command line and press Enter. This will open up the Drawing Units dialog box.

3. Select Desired Units: Within this dialog, locate the Units option and select "Meters" from the dropdown menu. Ensure that all other settings like precision are also adjusted to match your project requirements.

4. Set as Default: If you want this unit setting to be your default for future drawings, make sure to check the box labeled "Save as Default" found at the bottom left of the dialog box.

5. Confirm Your Selections: Click OK to apply the changes and exit the dialog box.

Switching from Inches to Millimeters

If you need to change your dimensions from inches to millimeters in AutoCAD 2025, follow these steps:

1. Open Dimension Style Manager: Access the Dimension Style Manager by typing DIMSTY in the command line.

2. Create a New Dimension Style: Click on the "New" button to start creating a new style. You’ll be prompted to name the style and choose an existing style to base it on.

3. Enter Units: With the new style selected, navigate to the "Primary Units" tab. Here, set the suffix to "mm" and adjust the Scale Factor to 25.4, since there are 25.4 millimeters in one inch.

4. Finalize Changes: Click OK to apply these new dimension settings and close the dialog.

Configuring AutoCAD for Feet

To adjust the unit settings in AutoCAD to utilize feet as the primary measurement, take these steps:

1. Open the Drawing Setup: Use the command AECTDWGSETUP on the command line to access the Drawing Setup dialog box.

2. Change the Units: Navigate to the Units tab within the dialog box. Locate and select "Feet" from the Drawing Units list.

3. Set Precision and Angle: Adjust the precision settings and any angle measures as needed for your design.

4. Customize Scale: If required, click on the Scale tab to add or modify any custom scale factors.

5. Save and Exit: Make sure to save your settings before clicking OK to apply your changes.

Modifying Existing Dimensions

To change the dimensions of existing objects within AutoCAD, follow this procedure:

1. Access the Dimension Style Manager: Again, type DIMSTY in the command line and hit Enter.

2. Select and Modify Style: Choose the style you wish to alter from the list and click on "Modify."

3. Adjust Dimension Features: In the Modify Dimension Style dialog box, go to the "Fit" tab. Here, you can adjust the scale settings for how dimensions are displayed.

4. Confirm Changes: Click OK to finalize the changes to the dimension style and then exit the Dimension Style Manager.

Frequently Asked Questions

1. How do I check the current unit settings in AutoCAD?
To check current unit settings, simply type the UNITS command into the command line. This opens the Drawing Units dialog where you can see the selected unit type and precision.

2. Will changing units affect existing drawings?
Changing unit settings affects how measurements are displayed and modified, but existing elements stay in their current state. They will only change if you enter new dimensions or modify them in a way that reflects the new units.

3. Is there a way to convert entire drawings to a different unit?
Yes, you can adjust the units of an entire drawing by using the "Drawing Setup" command and selecting the desired units. However, be cautious since this will not automatically convert existing object dimensions; you may need to individually adjust or scale them.