An AutoCAD LISP for "Total Area" is a custom script used to automate the summation of areas from multiple selected objects, such as closed polylines, circles, and hatches . While standard AutoCAD commands like
require selecting objects one by one, a LISP routine allows for a single selection of dozens or hundreds of entities to get an instant total. Autodesk Community, Autodesk Forums, Autodesk Forum Common Total Area LISP Routines
Several popular LISP routines are widely used by professionals to streamline these calculations: Total Area (TAREA): A lightweight routine by Lee Mac Programming
that sums the areas of selected objects and displays the result directly in the command line. AreaM (AREAM): Developed by Jimmy Bergmark at
, this script calculates the total area of various selected objects and is often paired with the command for complex drawings. Area to Field (A2F): Another popular Lee Mac routine
that doesn't just calculate the sum but creates an auto-updating MText field. If you modify the original object, the total area value updates automatically. MultiArea: A routine from ESurveying
that calculates the total area and automatically places a text label with the individual area at the centroid of each selected object. Lee Mac Programming How to Use a Total Area LISP To use these routines, you typically follow these steps: Download/Create the File: Save the LISP code as a file (e.g., TotalArea.lsp Load into AutoCAD: in the command line, select your file, and click "Load". Run the Command: Type the specific shortcut defined in the code (commonly Select Objects:
Use a window selection to grab all the closed polylines or circles you need to measure. Lee Mac Programming Typical Features and Capabilities
The Efficiency of Total Area LISP Routines in AutoCAD In the world of CAD drafting, precision and speed are the two pillars of productivity. While AutoCAD provides native tools like the command or the Properties
palette to find the square footage of objects, these methods often become tedious when dealing with dozens of scattered polylines. This is where
—specifically "Total Area" routines—becomes an essential asset for any serious drafter. The Problem with Native Tools
Manually calculating the sum of multiple areas in AutoCAD is prone to human error. Using the standard
command requires the user to select objects one by one, adding them to a running total. If you accidentally click the wrong point or miss a small polygon, you often have to start over. For large-scale projects like floor plans or site surveys, this manual entry is a significant bottleneck. How LISP Solves It
A "Total Area" LISP routine automates this calculation. Once loaded, the script allows a user to simply select a group of closed polylines, circles, or regions. The code then iterates through the selection set, extracts the area property of each entity, and calculates a grand total in seconds. The true power of these routines lies in their customization . A well-written LISP can: Convert Units: total area autocad lisp
Automatically switch between square inches and square feet or hectares. Place Text:
Automatically insert the total area value as a text label directly into the drawing. Filter Objects:
Calculate only the areas of objects on a specific layer, ignoring everything else. Workflow Integration
Integrating a Total Area LISP into a daily workflow is seamless. By adding the script to the "Startup Suite," the command becomes a permanent part of the user's toolkit. Instead of juggling a calculator and a notepad, a drafter can type a shortcut like
(Total Area), window-select a whole building wing, and immediately see the result in the command line or an alert box. Conclusion
The Total Area LISP is a prime example of why AutoCAD remains a dominant force in design; its open architecture allows users to build the tools they need. By automating repetitive math and reducing the risk of manual error, these scripts allow designers to spend less time on arithmetic and more time on actual design. sample code for a basic Total Area LISP, or help you troubleshoot an existing one?
Efficiency at Your Fingertips: The Power of Total Area AutoLISP in AutoCAD
In the world of professional drafting, speed and accuracy are the ultimate goals. While AutoCAD comes with built-in measurement tools, they often fall short when you need to calculate the cumulative area
of dozens of separate rooms or complex shapes. This is where
—AutoCAD’s specialized programming language—becomes a game-changer. Why Use an AutoLISP for Total Area? Standard AutoCAD commands like MEASUREGEOM
are excellent for single objects. However, if you need to find the total square footage of a building with 50 unique rooms, clicking each vertex manually is both tedious and prone to error. A "Total Area" LISP routine automates this by: Selecting Multiple Objects : Grabbing all polylines, hatches, or regions at once. Instant Summation
: Automatically adding the area of every selected object and displaying the total. Data Export
: Many routines can even paste the result directly into your clipboard or as text on your drawing. Top Tools for Calculating Total Area An AutoCAD LISP for "Total Area" is a
If you aren't ready to write your own code, there are powerful pre-made tools available: TotalLength + / TotalArea : This popular plugin from the Autodesk App Store
allows you to select object types and get a comprehensive total of both length and area in seconds.
: A streamlined utility that measures the total area of hatches and polylines and copies the value directly to your clipboard for use in Excel or Word. : A free architectural toolkit that includes the
command, specifically designed to display areas in square meters ( ) instantly. How to Create Your Own Routine
You don't need to be a software engineer to use AutoLISP. You can create your own custom scripts using the Visual LISP Editor Open AutoCAD and type in the command line.
Write your script in the console window. A simple routine typically iterates through a selection set of "AcDbPolyline" or "AcDbHatch" objects and sums their Save the file as a and use the command to load it into any drawing. Practical Applications Cost Estimation
: Quickly calculate total flooring or roofing material needed. Zoning Compliance
: Ensure your total built-up area meets local regulatory limits. HVAC Sizing
: Determine the total volume or surface area for climate control calculations.
Calculating total areas in AutoCAD often involves a tedious "add one by one" process with the native
command. AutoLISP routines automate this by summing multiple objects instantly and even exporting results to tables or Excel. Popular LISP Commands for Total Area
Different routines offer various levels of automation, from simple command-line totals to complex reporting:
: A widely used routine (often attributed to Jimmy Bergmark) that calculates the total area of all selected objects at once. It works on polylines, circles, ellipses, and splines. A2F (Area to Field) Step 4: Extract area using vlax-curve-getArea This Visual
: Creates an MText object containing a dynamic "Field Expression". If you modify the original shapes, the total area updates automatically after a AMO (Add Multiple Objects)
: Measures total area and automatically places text indicating the area at the centroid of each individual polygon. Area Table (AT)
: Calculates areas for multiple plots and automatically generates a structured AutoCAD table. RTR (Read Triangle Area)
: For detailed surveying, this command splits polygons into triangles and provides a table showing the calculation for each. Autodesk Community, Autodesk Forums, Autodesk Forum Core Logic: How the LISP Works
Most total area LISPs follow a similar logic structure to process multiple selections: Lisp to calculate area of all closed polylines selected 02-Apr-2019 —
Introduction: The Pain Point of Polyline Area Calculation
For architects, civil engineers, and interior designers, calculating the total area of multiple spaces is a daily, yet tedious, task. AutoCAD’s native AREA command is powerful for single objects, but what happens when you need the combined square footage of 50 apartments on a floor plan, or 200 different lawn sections in a landscape master plan?
Manually adding each area using a calculator is not only slow but also prone to human error. This is where the magic of AutoLISP comes in. A well-written "Total Area Lisp" routine can instantly sum the areas of selected objects (polylines, circles, hatches, or regions) and present the result in your desired unit—square feet, meters, or even acres.
In this article, we will explore what a "Total Area Lisp" is, how to install and use the most popular routine (TOTAREA), how to modify it to display totals in different units, and how to troubleshoot common errors.
This routine links the total area to a FIELD or RTEXT so that if you stretch a polyline, the total updates automatically (requires advanced Visual LISP using reactors).
vlax-curve-getAreaThis Visual LISP function works on any curve and returns a real number.
The raw output of the Lisp is in drawing units. In AutoCAD, one drawing unit can represent 1 millimeter, 1 inch, 1 meter, or 1 foot. This depends on your template.
To make the Lisp actually say "Sq. Ft." or "Sq. M.", we modify the final princ line.