Most basic total length LISP routines only read native line geometry. If your lines are embedded inside a Block, you will need to explode the block or use BEDIT first.
Calculating total cable runs for electrical plans, piping lengths for plumbing, or perimeter fencing for site layouts. Where to Download TLEN.lsp for Free
The AutoLISP script solves this problem. It allows you to calculate the total length of multiple lines, polylines, arcs, splines, and circles instantly. autocad tlenlsp download free
By default, AutoCAD allows you to view the length of a single object in the Properties palette. If you select multiple separate lines, AutoCAD will show the count, but it will not sum up the total distance. TlenLSP automates this process. With a single command, it scans your selection and displays the exact total length in your command line, saving hours of manual addition. Common Use Cases
Obtaining tlen.lsp is straightforward, as many reliable sources have hosted this free utility for years. Here are the primary methods: Most basic total length LISP routines only read
: Many users host the original code on GitHub . You can copy the raw text into Notepad and save it as tlen.lsp .
: Once you have AutoCAD, you can start exploring AutoLISP. There are many resources online, including the official Autodesk documentation, forums, and communities where you can learn more about AutoLISP programming. Where to Download TLEN
If you close AutoCAD, you must reload the script next time you open a drawing. To load it permanently, type APPLOAD , click the button under the "Startup Suite" icon, and add the tlen.lsp file there. The units do not match expectations
TLEN.lsp streamlines this process, making it indispensable for: Calculating total cable length. Plumbers/HVAC: Measuring pipe or duct runs. Architects: Estimating structural framing. Conclusion
| Name | Type | Key Feature | Cost | | :--- | :--- | :--- | :--- | | | LISP | Works with blocks and hatches | Free | | QuickSelect + Field | Native AutoCAD | Uses object grouping | Built-in | | Data Extraction (DXE) | Native AutoCAD | Exports totals to Excel | Built-in | | AreaOL (by Kdub) | LISP | Total area + perimeter | Free | | AutoCAD LT (Workaround) | Software limitation | No LISP support – use manual table | N/A |