Total Area Autocad Lisp May 2026

Calculating the total area of multiple objects in AutoCAD is a common pain point that AutoLISP routines solve instantly. Instead of manually adding individual areas, a LISP routine can select multiple closed polylines, hatches, or circles and output the combined total. 🚀 Top AutoLISP Commands for Area

Depending on which LISP file you load, these are the most common community-standard commands:

A2F (Area to Field): Creates an MText object containing a Field Expression that stays updated if you stretch the boundary.

AT / ATM (AreaText): Places text at the geometric center of selected objects or a bounding box center for multiple items.

AREATOT: A common generic command in many scripts that simply prints the sum of all selected objects to the command line.

PLA: A specific routine that loops until you stop clicking, placing area text at the center of each selected object. 🛠️ How to Use a Total Area LISP total area autocad lisp

Download/Create the File: Save your LISP code as a .lsp file (e.g., TotalArea.lsp).

Load the Routine: Type APPLOAD in AutoCAD, find your file, and click Load. To keep it permanently, add it to your Startup Suite.

Run the Command: Type the specific shortcut (like A2F or ATM) defined in the code.

Select Objects: Select the closed boundaries (polylines, circles, or regions) you need to sum up.

Output: The LISP will typically ask you to pick a point on the screen to place the "Total Area" text or will display it in the Command History. 💡 Pro Tips for Accuracy Calculating the total area of multiple objects in

Close Your Polylines: Ensure all shapes are closed; the command may ignore open lines or produce errors.

Unit Conversion: If your drawing is in millimeters but you need square meters, look for routines that allow a scale factor (e.g., dividing by 1,000,000).

Use Fields for Dynamic Updates: If you plan to change the room sizes later, use a routine that inserts a Field instead of static text so the total updates automatically.

Reliable Sources: High-quality, free routines can be found on sites like Lee Mac Programming or JTB World.

📍 Key Anchor: Use the APPLOAD command to ensure your LISP is ready for every new session. Note: Assumes your drawing units are in feet

If you tell me your specific goal (e.g., exporting to Excel, adding areas of different layers, or just simple labeling), I can recommend the exact script or code snippet you need.

The code (yes, you can copy this)

Save this as TOTALAREA.LSP and load it with APPLOAD:

(defun C:TLA (/ ss total area obj name)
  (setq ss (ssget '((0 . "LWPOLYLINE,CIRCLE,ELLIPSE,HATCH,REGION"))))
  (if (= ss nil)
    (princ "\nNo valid objects selected.")
    (progn
      (setq total 0)
      (repeat (setq i (sslength ss))
        (setq obj (ssname ss (setq i (1- i))))
        (setq area (vlax-curve-getArea obj))
        (setq total (+ total area))
      )
      (princ (strcat "\n--- TOTAL AREA ---"
                     "\nSquare feet: " (rtos total 2 2)
                     "\nSquare meters: " (rtos (* total 0.092903) 2 2)
                     "\nAcres: " (rtos (/ total 43560) 2 3)
                     "\nSquare yards: " (rtos (/ total 9) 2 2)))
    )
  )
  (princ)
)

Note: Assumes your drawing units are in feet. Change the conversion multipliers if you work in meters or millimeters.

Troubleshooting Common Errors

| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | ; error: bad argument type | You selected a non-curve entity (line, arc, text, block). | Modify your ssget filter to exclude those. | | ; error: no function definition: VLAX-CURVE-GETAREA | Visual LISP extensions not loaded. | Add (vl-load-com) at the top of your LISP file. | | Total = 0.00 | Polylines are not closed or are self-intersecting. | Use PEDIT → Close. For complex intersections, use REGION first. | | Area is huge (e.g., 1e9) | Drawing units are millimeters, but you expected meters. | Divide total by 1,000,000 in your LISP. |

The Problem: Why You Need This

If you have ever had to calculate the total carpet area of a floor plan consisting of 50 separate rooms, you know the pain. Without a Lisp routine, you have three bad options:

1. Use the AREA command and click 4 corners for every room (tedious and inaccurate).
2. Select a polyline, write down the area, grab a calculator, and repeat 50 times.
3. Use the _AREA > Add command, which requires constant clicking and is easy to mess up.

Cons: The "Bad"

• Reliability on Geometry: The Lisp is only as smart as the geometry. If your polyline isn't perfectly closed (a common issue in messy drawings), the Lisp may skip it or return an incorrect area. It requires clean drafting habits.
• No "Out of the Box" Support: Since these are custom scripts, they aren't installed by default. You have to load them via APPLOAD. For office environments, a CAD Manager usually has to deploy them to all users to ensure everyone is using the same version.
• Selection Set Confusion: If you have a complex drawing with overlapping polylines, it is easy to accidentally select an item twice, doubling your total area. You must verify your selection set (sometimes using the QSELECT or SELECTSIMILAR commands first helps).

Features:

• ✅ Supports multiple object types
• ✅ Shows count of processed objects
• ✅ Skips objects without area property
• ✅ Optional text insertion in drawing
• ✅ Adjustable decimal precision
• ✅ Unit conversion ready (uncomment for mm→m², inches→ft²)

Step 5: Sum and print

(princ (strcat "TOTAL = " (rtos total 2 2)))

The Most Popular Free Total Area LISP: TOTAREA.LSP

The most widely circulated free LISP for this task is often called TOTAREA.LSP or ADDTOTALAREA.LSP. While many versions exist, the core functionality is consistent.