Total Area Autocad Lisp __top__ May 2026

;;; TOTALAREA.LSP
;;; Calculates total area of selected objects
;;; Supports: Circles, Ellipses, Hatches, Polylines (2D/3D),
;;;           Regions, Splines (planar)
(defun C:TOTALAREA (/ ss total-area obj-list obj area obj-name
                    cnt *error* old-cmdcho old-dimzin)
;; Error handler
  (defun *error* (msg)
    (if old-cmdcho (setvar "CMDECHO" old-cmdcho))
    (if old-dimzin (setvar "DIMZIN" old-dimzin))
    (if (not (member msg '("Function cancelled" "quit / exit abort")))
      (princ (strcat "\nError: " msg))
    )
    (princ)
  )
;; Save system variables
  (setq old-cmdcho (getvar "CMDECHO"))
  (setq old-dimzin (getvar "DIMZIN"))
  (setvar "CMDECHO" 0)
  (setvar "DIMZIN" 0)  ; Suppress trailing zeros
(princ "\nSelect objects to calculate total area...")
  (setq ss (ssget '((-4 . "<OR")
                     (0 . "CIRCLE")
                     (0 . "ELLIPSE")
                     (0 . "HATCH")
                     (0 . "LWPOLYLINE")
                     (0 . "POLYLINE")
                     (0 . "REGION")
                     (0 . "SPLINE")
                     (0 . "ARC")      ; Arc (converted to region)
                     (0 . "LINE")     ; Line (converted to region)
                     (0 . "LWPOLYLINE")
                     (-4 . "OR>"))))
(if (not ss)
    (princ "\nNo objects selected.")
    (progn
      (setq total-area 0.0)
      (setq obj-list '())
      (setq cnt 0)
;; Process each selected object
      (repeat (setq cnt (sslength ss))
        (setq obj (ssname ss (setq cnt (1- cnt))))
        (setq obj-name (cdr (assoc 0 (entget obj))))
;; Calculate area based on object type
        (cond
          ;; For objects with direct Area property
          ((member obj-name '("CIRCLE" "ELLIPSE" "HATCH" "LWPOLYLINE" 
                              "POLYLINE" "REGION" "SPLINE"))
           (command "._AREA" "_O" obj)
           (setq area (getvar "AREA"))
           (if (> area 0)
             (progn
               (setq total-area (+ total-area area))
               (setq obj-list (cons (list obj-name area) obj-list))
             )
           )
          )
;; For objects that need conversion (lines, arcs)
          ((member obj-name '("LINE" "ARC"))
           (princ (strcat "\nConverting " obj-name " to region for area calculation..."))
           (command "._REGION" obj "")
           (if (setq region-ent (entlast))
             (progn
               (command "._AREA" "_O" region-ent)
               (setq area (getvar "AREA"))
               (if (> area 0)
                 (progn
                   (setq total-area (+ total-area area))
                   (setq obj-list (cons (list obj-name area) obj-list))
                 )
               )
               (command "._ERASE" region-ent "") ; Clean up temporary region
             )
             (princ (strcat "\nFailed to convert " obj-name " to region"))
           )
          )
(t
           (princ (strcat "\nUnsupported object type: " obj-name))
          )
        )
      )
;; Display results
      (princ "\n========================================")
      (princ "\nAREA CALCULATION RESULTS")
      (princ "\n========================================")
(if obj-list
        (progn
          (foreach item (reverse obj-list)
            (princ (strcat "\n" (car item) ": " 
                          (rtos (cadr item) 2 2) " sq units"))
          )
(princ "\n----------------------------------------")
          (princ (strcat "\nTOTAL AREA: " (rtos total-area 2 2) " sq units"))
;; Offer to display in different units
          (initget "Yes No")
          (if (= (getkword "\nDisplay in different units? [Yes/No] <No>: ") "Yes")
            (progn
              (princ "\nSelect unit conversion:")
              (princ "\n  1 - Square feet")
              (princ "\n  2 - Square meters")
              (princ "\n  3 - Square yards")
              (initget 1 "1 2 3")
              (setq unit (getkword "\nEnter choice [1/2/3]: "))
              (cond
                ((= unit "1") ; sq ft
                 (setq converted (* total-area 144.0)) ; assuming drawing units in inches
                 (princ (strcat "\nConverted: " (rtos converted 2 2) " sq ft")))
                ((= unit "2") ; sq meters
                 (setq converted (* total-area 0.00064516)) ; sq inches to sq meters
                 (princ (strcat "\nConverted: " (rtos converted 2 2) " sq meters")))
                ((= unit "3") ; sq yards
                 (setq converted (* total-area 0.000771605)) ; sq inches to sq yards
                 (princ (strcat "\nConverted: " (rtos converted 2 2) " sq yards")))
              )
            )
          )
;; Option to write total to command line
          (princ "\n========================================")
;; 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.")
      )
    )
  )
;; Restore system variables
  (setvar "CMDECHO" old-cmdcho)
  (setvar "DIMZIN" old-dimzin)
  (princ)
)
;;; Command alias
(defun C:TA () (C:TOTALAREA))
;;; Load message
(princ "\nTOTALAREA.LSP loaded successfully!")
(princ "\nType 'TOTALAREA' or 'TA' to calculate total area.")
(princ)

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.

How to use:

  1. Save the code as TOTALAREA.LSP file

  2. Load in AutoCAD:

    • Type AP (APPLOAD) and select the file, OR
    • Type (load "TOTALAREA") at command line

  3. Run the command:

    • Type TOTALAREA or TA at command line

  4. Select objects:

    • Select one or more objects (supports circles, polylines, hatches, regions, etc.)
    • Press Enter to complete selection

  5. View results:

    • Individual areas for each object
    • Total area sum
    • Optional unit conversion (sq ft, sq m, sq yd)
    • Optional clipboard copy

Features:

  • ✅ Supports multiple object types
  • ✅ Automatically converts lines/arcs to regions
  • ✅ Error handling
  • ✅ Optional unit conversion
  • ✅ Clipboard copy function
  • ✅ Suppresses trailing zeros
  • ✅ Works in all AutoCAD versions

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)

Pros: The "Good"

  • Massive Time Savings: What takes 15 minutes with a calculator takes 15 seconds with a Total Area Lisp. You can select hundreds of hatches or polylines and get an instant sum.
  • Live Updates (In some versions): The best Total Area Lisps utilize Fields. This means if you stretch the polyline, the text label showing the area updates automatically. This is a game-changer for dynamic design phases.
  • Layer Filtering: Advanced versions allow you to calculate the area of specific layers only (e.g., calculate "Flooring" layer but ignore "Furniture" layer).
  • Accuracy: It eliminates human error from typing numbers into a calculator or forgetting to carry a digit.
  • Unit Conversion: Many scripts allow you to draw in meters but output the total in square feet (or vice versa) instantly.

Step 2: Prompt for selection

(setq ss (ssget '((0 . "LWPOLYLINE,POLYLINE,CIRCLE,ELLIPSE"))))

Step 4: Extract area using vlax-curve-getArea

This Visual LISP function works on any curve and returns a real number. total area autocad lisp

Civil/Survey: Acres and Square Feet with Precision

Use a LISP that outputs in acres to 4 decimal places, and include a check for polylines with bulge segments (curves). The basic vlax-curve-getArea handles arcs correctly.