Total Area Autocad Lisp Jun 2026

(defun c:TAExt ( / ss totalArea i obj area conversion pt textHeight) (vl-load-com) (setq totalArea 0.0) ;; CHANGE YOUR CONVERSION FACTOR HERE ;; 1.0 = No change (keeps current drawing units) ;; 0.000001 = Converts Square Millimeters to Square Meters ;; 0.000000092903 = Converts Square Inches to Square Yards (setq conversion 0.000001) (princ "\nSelect objects for cumulative area calculation: ") (if (setq ss (ssget '((0 . "LWPOLYLINE,POLYLINE,CIRCLE,HATCH,REGION")))) (progn (repeat (setq i (sslength ss)) (setq obj (vlax-ename->vla-object (ssname ss (setq i (1- i))))) (if (vlax-property-available-p obj 'Area) (setq totalArea (+ totalArea (vla-get-area obj))) ) ) ;; Apply the conversion factor (setq totalArea (* totalArea conversion)) (princ (strcat "\nCalculated Total Area: " (rtos totalArea 2 3))) ;; Prompt user to place text in drawing (initget "Yes No") (if (= "Yes" (getkword "\nInsert total area text into the drawing? [Yes/No] : ")) (progn (setq pt (getpoint "\nPick insertion point for the text: ")) (setq textHeight (getdist pt "\nSpecify text height : ")) (if (null textHeight) (setq textHeight 2.5)) (entmake (list '(0 . "TEXT") '(100 . "AcDbEntity") '(100 . "AcDbText") (cons 10 pt) (cons 40 textHeight) (cons 1 (strcat "Total Area: " (rtos totalArea 2 2) " Sq.M.")) ) ) (princ "\nText successfully inserted.") ) ) ) (princ "\nNo valid geometry selected.") ) (princ) ) Use code with caution. How to Load and Run LISP Scripts in AutoCAD

Using fields tied to object IDs allows text notes to automatically update their calculations whenever you run a drawing REGEN (Regenerate). If your design workflow shifts constantly, look into creating LISP routines that deploy dynamic fields rather than static text strings.

:Divide the output by 144. (setq total (+ total (/ area 144.0))) Use code with caution. Troubleshooting Common Errors

;;; Command alias (defun C:TA () (C:TOTALAREA))

Open Notepad or any plain text editor and copy the following code: total area autocad lisp

AutoCAD is unitless by default. If you draw in millimeters, your area calculation will result in square millimeters ( mm2m m squared ). To display this in square meters ( m2m squared ), you must divide the result by

;;; TSA.LSP - Total Selected Area ;;; A simple routine to sum the areas of selected objects.

One of the most straightforward tools is the paste Total Area command from . As its name suggests, it allows you to select closed linear entities (like polylines) and instantly provides the sum area in an alert and on the command line. Even better, it automatically copies the total area to your Windows clipboard, meaning you can paste it directly into an email, spreadsheet, or report with CTRL+V .

Allows you to export the Area property of selected polylines to a table or Excel file and sum them up within that table. Conclusion (defun c:TAExt ( / ss totalArea i obj

The native AutoCAD AREA command is powerful for measuring individual or sequential areas, but it falls short when you need a simple, dynamic sum of a selection set. Relying on mental math, a separate spreadsheet, or the clunky addition function within the AREA command adds unnecessary steps and introduces a significant risk of error.

One of the greatest strengths of AutoLISP is its customizability. A common requirement is changing the output units (e.g., from square millimeters to square meters or from square feet to acres).

;; Copy total area to clipboard (optional) (initget "Yes No") (if (= (getkword "\nCopy total area to clipboard? [Yes/No] <No>: ") "Yes") (progn (setq area-str (rtos total-area 2 2)) (command "._SETENV" "Clipboard" area-str) (princ "\nTotal area copied to clipboard!") ) ) ) (princ "\nNo valid area objects selected.") ) ) )

A typical "Total Area" LISP script functions by creating a selection set of closed entities and looping through them to retrieve the area property. For example, a basic routine might look like this: Lisp to calculate area of all closed polylines selected "TEXT") '(100

: For multiple closed polylines, simply selecting them all and checking the "Area" field in the Properties palette will often show "Varies" for individual values, but some versions/plug-ins may sum them. 2. Specialized AutoLISP Routines

By default, loaded LISP files disappear when you close AutoCAD. To prevent reloading the file every time you open a drawing, add it to your Startup Suite: Type again.

Share in the comments – I’m always looking for the next workflow hack.

(t (princ (strcat "\nUnsupported object type: " obj-name)) ) ) )