How to calculate area in autocad

Written by ryan crooks
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How to calculate area in autocad
Calculating area helps building professionals determine the correct size of buildings. (Hemera Technologies/ Images)

Autodesk's AutoCAD is a computer-aided design (CAD) application that provides precise tools to draw, edit and analyse a building project. Area calculation is important in the building industry to determine costs, structural loads and material quantities. Unlike hand drafting, AutoCAD calculates the area of drawn elements using an inquiry tool that quickly provides the calculations. All versions of AutoCAD require a drawn boundary around a building plan or part to provide the area of the element in question.

Skill level:
Moderately Easy


  1. 1

    Open AutoCAD and select "Open" in the "File" menu. Navigate to your project file and click "Open."

  2. 2

    Draw a polyline around the surface you would like to calculate; type "Pline" in the command line and click the vertices of the surface and type "C" to close the polyline. Press the "Enter" or "Return" key on your keyboard.

  3. 3

    Calculate the area of the surface enclosed by the polyline; type "Measuregeom" in the command line, type "Ar" and press "Enter" or "Return" for the area calculation, and type "O" and press "Enter" or "Return" to select the object to measure. Select the polyline drawn in Step 2; the area and perimeter of the shape will appear in the command line.

Tips and warnings

  • The "Measuregeom" command also has other useful tools to measure distance, radius, angle and volume. Follow the instructions on the command line, after typing the command, to use these other tools.

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