Change the Scale Between Engineering and Architectural
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Change the Scale Between Engineering and Architectural


You need to convert an existing drawing from Engineering Scale to Architectural Scale, or from Architectural Scale to Engineering Scale.


For example, you may have reached an advanced stage in your drawing, only to have a client, supervisor, or design committee request that you submit your plan in a different scale.



Fortunately, you can convert your scale quickly in just a few steps.


Step 1: Resize All Objects in Your Drawing

This step will apply your new scale to all objects that are currently in your drawing – from linework to plants, irrigation equipment, hatches – everything!


In Model Space, type SCALE in the Command line, and press Enter.



The Command line will prompt you to Select objects. Select the entirety of your drawing in Model space. Press Enter.



The Command line will prompt you to Specify base point. Type 0,0 to set your base point at 0,0. Press Enter.



The Command line will prompt you to Specify Scale Factor. Set one of the following scale factors:

  • Convert to Engineering Scale: Type 1/12, and press Enter.
  • Convert to Architectural Scale: Type12, and press Enter.


A Bit of Explanation

AutoCAD is technically a "unitless" system. For example, a line drawn from the coordinates 0,0 to 0,10 in Decimal Feet will be 10 "units" long. Whether you change your units to inches, meters, millimeters, angstroms, or parsecs, the line will continue to measure 10 units.


Measures 10 units



However, the issue of scale forces a new wrinkle into this perfect unitless world. If you did, in fact, change your units, you would eventually need the line to be measured in the number of your new units that match its measurement in the original units. So for an object that was originally meant to measure 10 feet, changing your units to inches would then require the object to actually measure 120 units (in this case, 120 inches, or 10 feet).


120 units


That's exactly why you need to resize the objects in your drawing when changing the scale. In our example, changing the number of units in our line will not make the line longer or shorter – as long as we rescale the drawing correctly. It simply changes the number of "units" in the drawing to match the new scale we're about to set.



Step 2: Rescale Your Drawing

You can easily rescale your drawing using the Land F/X Scale tool. In Model Space, open our Scale tool:


Scale tool

F/X Adminribbon, Scale tool




Planting ribbon, scale button

F/X Plantingribbon, Scale button



FX ADMIN Toolbar

FX ADMIN toolbar



Type SetDrawScale in the Command line

FX ADMIN menu, scale option

FX ADMIN menu, scale option




The Plot Scale dialog box will open.




Convert to Engineering Scale:


Decimal Feet


  • Change the Drawing Units to Decimal Feet.
  • Click OK.


Convert to Architectural Scale:


Convert to Architectural scale
  • Change the Drawing Units to Architectural Inches.
  • Click OK.

Make sure the Rescale Objects box is unchecked. (You've already rescaled, or resized, your objects in Step 1.)


Rescale Objects unchecked


Step 3: Rescale Your Viewport in Paper Space

Finally, you'll need to change the units in Paper Space to match the units you've set in Model Space above. We've added a Land F/X feature that allows you to do just that.


First, open Paper Space and double-click within the viewport.


Paper Space and Double-click viewport


Open the Scale tool, and set the same units you set in Step 2 above. This time, you'll be rescaling your Paper Space viewport.


Land F/X will scale the viewport for you. Your drawing is now completely rescaled!

Last modified on Apr 18, 2022


  • Land F/X

Our software tailors AutoCAD® to the needs of landscape architects, irrigation designers, and other professionals. We automate your most tedious tasks and ensure accuracy, giving you more time to design.

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