How Do You Change From Mm to Meters in AutoCAD?

AutoCAD is a powerful software tool used by architects, engineers, and designers to create precise and detailed drawings. One common task in AutoCAD is converting measurements from millimeters (mm) to meters (m). In this tutorial, we will learn how to change from mm to meters in AutoCAD.

Step 1: Select the Measurement Units

Before we can convert our measurements, we need to ensure that the correct measurement units are selected in AutoCAD. To do this, follow these steps:

  1. Open AutoCAD: Launch the AutoCAD application on your computer.
  2. Access Drawing Utilities: Go to the “Drawing Utilities” menu located at the top of the screen.
  3. Select Units: From the dropdown menu, select “Units” to open the Units dialog box.

Step 2: Adjust Linear Display Format

To convert from mm to meters, we need to adjust the linear display format in AutoCAD. Here’s how you can do it:

  1. Select Length Type: In the Units dialog box, click on “Length” under “Type” which will display various length options.
  2. Select Decimal as Format: Choose “Decimal” as your desired format for displaying lengths.
  3. Adjust Precision: Set your desired precision level by adjusting the number of decimal places. For example, if you want measurements displayed up to two decimal places, enter ‘0.00’ in the Precision field.
  4. Select Meters as Insertion Scale: Under “Insertion Scale”, select “Meters” from the dropdown menu.
  5. Click OK: Once you have made the necessary adjustments, click on the “OK” button to save your changes.

Step 3: Convert Measurements from mm to Meters

Now that we have set up the correct measurement units, we can easily convert our measurements from mm to meters in AutoCAD. Follow these steps:

  1. Create a New Drawing: Open a new drawing or use an existing one where you want to perform the conversion.
  2. Select Objects: Use any drawing tool or command to select the objects you want to convert. This can be lines, circles, or any other geometric shape.
  3. Open Properties Palette: Right-click on any selected object and choose “Properties” from the context menu.

    This will open the Properties palette.

  4. Modify Length Value: In the Properties palette, locate the length value for your selected object and modify it by dividing it by 1000. This will convert it from mm to meters.


In conclusion, changing measurements from millimeters (mm) to meters (m) in AutoCAD is a straightforward process. By adjusting the measurement units and linear display format, we can easily convert our measurements and work with precision. Remember to always double-check your conversions and make sure you are using the correct units for your specific project requirements.

I hope this tutorial has been helpful in guiding you through the process of converting measurements in AutoCAD. Now you can confidently work with different measurement units and produce accurate drawings in meters!