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AreaCalc

Short description

📐 AreaCalc is an AutoCAD AutoLISP area calculation utility that selects closed objects, converts measured areas between drawing units, labels each area, and creates LineText, AutoCAD Table, TXT, or CSV reports.

Command:

🚀 Primary command: AC

Type AC in the AutoCAD command line to start the area calculation workflow.

🧭 The command first asks for an object filter:
ANY, POLYLINE, CIRCLE, ELLIPSE, REGION, SPLINE, or HATCH.

🪟 After selecting valid closed objects, AreaCalc opens the Area Calc v2.1 DCL dialog where the user controls labels, units, precision, fields, and report output.

Description:

📐 AreaCalc is an AutoCAD and Civil 3D AutoLISP utility for calculating and reporting areas from closed drawing geometry. It is useful for CAD drafting, quantity takeoff, land development plans, hatch based measurement, closed polyline area reporting, and Civil 3D production drawings where area values need to be labeled and exported quickly.

🔍 The AC command filters the selection to supported area-capable objects, including closed polylines, circles, ellipses, regions, splines, and hatches. The routine checks that selected curve objects are closed, calculates each area with the AutoCAD AREA object workflow, stores the total, and determines label locations from object bounding boxes.

🧮 The Area Calc v2.1 dialog lets the user set a label prefix, starting label number, source units, target conversion units, optional second conversion units, and decimal precision. The default source unit is driven by the INSUNITS variable when available, with a fallback default when INSUNITS is zero.

📊 AreaCalc can output results as placed LineText, a native AutoCAD table, a TXT report, or a CSV report. TXT and CSV reports are written to the AutoCAD support path near ACAD.PAT and opened in Windows Explorer after creation.

🧩 When field output is enabled, supported report types can use AutoCAD object fields so area values remain linked to the source objects. This makes the workflow useful when the drawing may still change after the first calculation.

Helper function: (if any)​

🧩 GetObjectID — returns the AutoCAD object ID string used for field expressions.
📊 Acv21AddTable — places a native AutoCAD table with selected area report columns.
📝 AcV21AddLtTable — creates a line and text based report table directly in model space.
📏 GetTableWidths and acwidthlist — calculate dynamic column widths for table output.
🧮 Ac_MakeUnitList — fills DCL unit popup lists from the unit list.
🪟 ac_dialog — writes the temporary Area Calc v2.1 DCL dialog file.
📤 list->string and Strlcat — format CSV rows and joined text output.
🚀 C:AC — main command that selects objects, calculates areas, opens the dialog, labels objects, and writes the selected report.

Functionalities:

🚀 Starts with the AC command from the AutoCAD command line.
🔍 Provides an object filter for ANY, POLYLINE, CIRCLE, ELLIPSE, REGION, SPLINE, and HATCH.
📐 Calculates individual and total area from closed area-capable entities.
🧭 Uses bounding boxes to place area labels near the center of each selected object.
🏷️ Allows a custom label prefix and starting number.
🔢 Supports decimal precision settings from 0 to 8, with LUPREC fallback.
🧮 Converts from drawing units to selected target area units.
➕ Supports an optional additional conversion column.
🔗 Can build AutoCAD field expressions for linked area values when field mode is enabled.
📊 Outputs to LineText, AutoCAD Table, TXT, or CSV.
💾 Creates TXT and CSV area reports and opens the output file location automatically.
↩️ Wraps the operation in an AutoCAD undo mark and restores CMDECHO after completion.

Result:

✅ The result is a labeled and calculated area schedule for selected closed AutoCAD geometry, with converted values, totals, and optional linked field expressions.

📊 Depending on the selected report type, the user receives a placed drawing table, a text based schedule in model space, a TXT report, or a CSV report for Excel and quantity workflows.

Images, animations etc.

Pixel

XAML code:

<ResourceDictionary
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<Bold>Function Syntax: AC</Bold>
<LineBreak/>
<Bold>Version: 1.0 Date: 21.06.2026 5:21:44AM</Bold>
<LineBreak/>
<Hyperlink>https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/calc-area-label/td-p/7769387</Hyperlink>
<LineBreak/>		


<Bold><Run Foreground="DodgerBlue">📐 Function Syntax: AreaCalc</Run></Bold><LineBreak/>
<Bold><Run Foreground="Orange">🚀 Command: AC</Run></Bold><LineBreak/>
<Bold><Run Foreground="LimeGreen">Version: Area Calc v2.1</Run></Bold><LineBreak/>
<Run Foreground="White">📐 AreaCalc is an AutoCAD and Civil 3D AutoLISP utility for calculating areas from closed drawing objects, converting units, labeling selected geometry, and creating report output.</Run><LineBreak/>
<Run Foreground="LimeGreen">✅ It is useful for quantity takeoff, closed polyline area reporting, hatch area schedules, land development drawings, CAD production checks, and Civil 3D plan documentation.</Run><LineBreak/>
<Bold><Run Foreground="DodgerBlue">🧭 Main Workflow</Run></Bold><LineBreak/>
<Run Foreground="White">🚀 Run </Run><Bold><Run Foreground="Orange">AC</Run></Bold><Run Foreground="White"> in the AutoCAD command line.</Run><LineBreak/>
<Run Foreground="White">🔍 Choose an object filter: </Run><Bold><Run Foreground="Orange">ANY</Run></Bold><Run Foreground="White">, </Run><Bold><Run Foreground="Orange">POLYLINE</Run></Bold><Run Foreground="White">, </Run><Bold><Run Foreground="Orange">CIRCLE</Run></Bold><Run Foreground="White">, </Run><Bold><Run Foreground="Orange">ELLIPSE</Run></Bold><Run Foreground="White">, </Run><Bold><Run Foreground="Orange">REGION</Run></Bold><Run Foreground="White">, </Run><Bold><Run Foreground="Orange">SPLINE</Run></Bold><Run Foreground="White">, or </Run><Bold><Run Foreground="Orange">HATCH</Run></Bold><Run Foreground="White">.</Run><LineBreak/>
<Run Foreground="White">📐 Select closed area objects. Open or unsupported objects are ignored.</Run><LineBreak/>
<Run Foreground="White">🪟 The </Run><Bold><Run Foreground="Orange">Area Calc v2.1</Run></Bold><Run Foreground="White"> dialog then controls labels, unit conversion, precision, fields, and report format.</Run><LineBreak/>
<Bold><Run Foreground="DodgerBlue">📘 SEO Optimized Description</Run></Bold><LineBreak/>
<Run Foreground="White">📐 AreaCalc helps AutoCAD users calculate object areas, convert area units, label geometry, and generate area reports directly from selected drawing entities.</Run><LineBreak/>
<Run Foreground="White">🧮 The command supports square inch, square foot, square yard, acre, square mile, metric units, and additional engineering units.</Run><LineBreak/>
<Run Foreground="White">📊 Results can be written as model space LineText, a native AutoCAD table, a TXT area report, or a CSV file for Excel workflows.</Run><LineBreak/>
<Run Foreground="White">🔗 When field mode is enabled, supported report outputs can include AutoCAD field expressions linked to selected source object areas.</Run><LineBreak/>
<Bold><Run Foreground="LimeGreen">🧩 Functionalities</Run></Bold><LineBreak/>
<Run Foreground="White">🔍 </Run><Bold><Run Foreground="LimeGreen">Filtered object selection</Run></Bold><Run Foreground="White"> - selects closed polylines, circles, ellipses, regions, splines, and hatches.</Run><LineBreak/>
<Run Foreground="White">📐 </Run><Bold><Run Foreground="LimeGreen">Area calculation</Run></Bold><Run Foreground="White"> - calculates each selected object area and builds a total value.</Run><LineBreak/>
<Run Foreground="White">🧮 </Run><Bold><Run Foreground="LimeGreen">Unit conversion</Run></Bold><Run Foreground="White"> - converts from drawing units to a selected target area unit.</Run><LineBreak/>
<Run Foreground="White">➕ </Run><Bold><Run Foreground="LimeGreen">Additional conversion column</Run></Bold><Run Foreground="White"> - adds a second converted value when required.</Run><LineBreak/>
<Run Foreground="White">🔢 </Run><Bold><Run Foreground="LimeGreen">Precision control</Run></Bold><Run Foreground="White"> - supports decimal precision from 0 to 8 with LUPREC fallback.</Run><LineBreak/>
<Run Foreground="White">🏷️ </Run><Bold><Run Foreground="LimeGreen">Automatic labels</Run></Bold><Run Foreground="White"> - places numbered MText labels using a custom prefix and starting number.</Run><LineBreak/>
<Run Foreground="White">🔗 </Run><Bold><Run Foreground="LimeGreen">Field support</Run></Bold><Run Foreground="White"> - builds AutoCAD object field expressions for live drawing based values when available.</Run><LineBreak/>
<Run Foreground="White">📊 </Run><Bold><Run Foreground="LimeGreen">Multiple report formats</Run></Bold><Run Foreground="White"> - outputs to LineText, native AutoCAD Table, TXT, or CSV.</Run><LineBreak/>
<Run Foreground="White">💾 </Run><Bold><Run Foreground="LimeGreen">External report export</Run></Bold><Run Foreground="White"> - writes TXT and CSV reports to the AutoCAD support path and opens the file in Explorer.</Run><LineBreak/>
<Run Foreground="White">↩️ </Run><Bold><Run Foreground="LimeGreen">Undo safe operation</Run></Bold><Run Foreground="White"> - wraps the workflow in an AutoCAD undo mark and restores command echo settings.</Run><LineBreak/>
<Bold><Run Foreground="DodgerBlue">✅ Practical Result</Run></Bold><LineBreak/>
<Run Foreground="White">The final result is a clean AutoCAD area schedule with object labels, converted area values, totals, and an output format suitable for drawings, reports, or Excel based quantity workflows.</Run><LineBreak/>
<Bold><Run Foreground="DarkRed">⚠️ Important Notes</Run></Bold><LineBreak/>
<Run Foreground="White">Only valid closed objects can be calculated. TXT and CSV report types do not keep live AutoCAD field links. External TXT and CSV files are written to the AutoCAD support folder derived from ACAD.PAT.</Run><LineBreak/>




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Area_calc.xamlDownload XAML file

Additional info:

Based on / Source code: https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/calc-area-label/td-p/7769387

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