tlen.lsp is an script that calculates the Total LENgth of selected objects within an AutoCAD drawing. It automatically iterates through selected lines, polylines, arcs, and circles, sums their individual lengths, and displays the total in a convenient alert box or at the command line. Key Benefits
If you’re looking for (a classic AutoCAD LISP routine to measure total length of selected lines/polylines):
Regarding copyright, most free LISP routines, including the original TLEN.LSP, are explicitly shared as freeware for community use. However, some enhanced or compiled versions (like the Booth.pm version or TotalLength+) are commercial software and require a purchase. Always respect the license terms provided by the author.
Estimating cable lengths, pipe runs, fencing, and landscaping paths.
Measure Like a Pro: How to Download and Use TLEN.lsp in AutoCAD
: Historically, LT did not support LISP, but AutoCAD LT 2024 and newer now include AutoLISP support, meaning you can use tlen.lsp in recent LT versions.
The (Total Length) AutoLISP routine completely solves this problem. It is widely considered one of the best custom scripts for engineering, construction estimation, and quantity surveying, allowing users to calculate total cumulative measurements with a single click. Why You Need TLEN.lsp in Your AutoCAD Workflow
Instead of manually clicking every single line segment, opening the properties bar, and adding the numbers together in a calculator, TlenLSP gives you a grand total in a single keystroke. What used to take 20 minutes now takes 2 seconds. 2. Elimination of Human Error
For , rejoice! With the introduction of AutoLISP in AutoCAD LT 2024, you can now also enjoy the power of AddLen and other LISP routines.
It handles complex, mixed selections of linear entities. Where to Find the Best TLEN.lsp Download (2026)
You have two primary ways to load TLEN.LSP, depending on how often you need to use it.
Get-FileHash .\installer.exe -Algorithm SHA256