Ho Model Layout Design Tool

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Simple Computer Aided Railway Modeller

SCARM means Simple Computer Aided Railway Modeller – software for easy and precise design of model train layouts and railroad track plans.

With SCARM you can easily create the layout of your dreams. Just download the setup package, install it and start editing your first track plan.

In SCARM you can use unlimited number* of tracks and objects from more than 220 libraries and instantly see your design in 3D preview with a single click.

And don't forget: Enjoy the hobby and have fun with the model trains

* Only in the licensed version

SCARM is awesome!!! Thanks so much for putting it together. I am using it to create a new Christmas tree layout.

Hank Jones
SCARM Blog

I would like to thank you very much for taking so much time to create the SCARM software. It has been a great help for me to plan my H0 scale project.

Xavier Taribo, Barcelona, Spain

What you can do with SCARM software?

You can create complex railroad layouts with many train stations on virtually unlimited area
You can shape flex-tracks easily, intuitively and most important – in very realistic way
You can deploy your layout on more than one level, with different heights and slopes for chosen sections of the track route
You can place tunnels and bridges on the track plan
You can draw figures to create buildings of train stations, houses, industries, etc. together with all needed roads and infrastructure
You can use semaphores and color light signals to create the signalling in the layout track route
You can see a 3D view of your layout - just select "3D" button from the toolbar and review your design from all sides and angles
You can measure distances and check track sections' lengths using the "Tools" menu
You can export and/or print your layout and share it with other model train fans and enthusiasts
You can view and print a list with the track pieces needed and even use it as a shopping list
You can extend the functionality of the main program with various extensions like the Model Trains Simulator
You can share your ideas with the author, request new features and report bugs and errors, if you find any

The current version of SCARM software supports more than 220 track and object libraries.*

* Some of the libraries are not fully completed. Data accuracy is not guaranteed. More libraries will come soon.

Information, Tutorials & Resources

The SCARM Blog is your ultimate source for updated information about the program. It contains many useful articles and resources about SCARM.

SCARM – The Railway Modeller's Blog

The blog contains the following categories:

General - General information, news and events, related to SCARM software
Basic Stuff - SCARM basics and main features in details
Advanced Techniques - For those who wants to become SCARM experts
Tips & Tricks - Getting most productivity in your work with SCARM
Tutorials & Examples - How-To's and demos of using various SCARM functions and features
Railroad Layouts & Design Ideas - Railway track plans, whole SCARM layouts and more for your inspiration
Problems & Solutions - Troubleshooting in SCARM and workarounds of potential issues

Do not miss the video tutorials about SCARM created by Ruud Boer and J. B. aka Gilshrat.

Video Tutorial Series

If you are looking for examples and projects designed in SCARM software, go to the special Layouts & Track Plans website and search by scale, size, track system and more.

Model Train Layouts & Track Plans