BlueBrick LEGO train track planning software

LEGO track planning software – a guide by LEGO train nerds

5 June 2026.

It can be hard to visualise a plan for your LEGO city or train layout, and it’s not a new problem – LEGO fans have been changing their cities since LEGO cities existed! There are now a plethora of LEGO track planning options available, so we’ve put together a handy guide on LEGO train track planning software and apps.

LEGO train tracks have some strange geometry (see L-Gauge,’s guide and Brickpile’s original article), and keeping track of how this effects your track layout alongside planning building locations and where custom tracks will meet up makes even relatively simple LEGO railway displays hard to keep track of (pun intended) in your head.

The classic LEGO track planner – BlueBrick

BlueBrick has been around for a long time, and is still in active development, being the go-to option for track planning for the LEGO train community.

  • Established software present in the community and still in development
  • Large part library including third party track pieces
  • Layers allow complex designs to be organised with track, baseplates, tables/baseboards and text labels kept separately – if you want them to be
  • Inventory tool to allow easy counting for track/baseplates used
  • You can save files, share them with friends, and import others’ designs
  • Windows app only

BlueBrick LEGO track planning software example

BlueBrick isn’t just a LEGO train track planning program – it can plan cities, towns and other layouts, making it a really powerful option. Whilst simple on the surface, BlueBrick allows you to create layers, keeping baseplates, tracks, zone colours and even tables and baseboards in separate layouts to be moved around independently. It even has an inventory tool to tell you how many of each type of track and baseplate your layout requires.

BlueBrick LEGO track planning software example

The BlueBrick example above shows a possible plan for the LNUR branchline at a show, including custom track options with colours indicating different track radii. Using colour blocks, we (in this case, Henry!) have depicted key features of the scenery to allow us to see which modules are where at a glance. You can find a video guide to getting started with BlueBrick on YouTube here.

The only real downside of BlueBrick is it requires Windows to run.

Download BlueBrick for free from bluebrick.lswproject.com.

Mertin LEGO Train Layout Builder by Mertin

The Mertin LEGO Train Layout Builder is a free online, in-browser tool for planning LEGO train track layouts.

  • Browser only – no apps to install
  • Has ability to log in and save layout designs
  • Fairly easy to add track and baseplates
  • Visually clean and easy to follow
  • Inventory tool to allow easy counting for track/baseplates used

Mertin LEGO Train Layout Builder tool example

Use this free online at brix.mertin.co.uk.

Your Tracks iOS app

Your Tracks (currently 99p in the App Store) provides long awaited LEGO track planning features for iOS devices such as iPad and iPad.

  • Paid app – but low price
  • Visually clean and feels smooth to use
  • Ability to save and load past designs
  • Easy to zoom in and out – ideal for smaller screen uses

Your Tracks LEGO track planning app for iPhone

BrickLayouts

BrickLayouts - software for planning LEGO train layouts

BrickLayouts is a new online software for planning layouts and track.

  • Ability to add layers
  • Easy click and connect tool

You can find their app.bricklayouts.com

SCARM

SCARM (Simple Computer Aided Railway Modeller) is a track planner used in model railway and model railroad building, and also supports LEGO train track planning.

4DBrix nControl

4DBrix’s nControl software for Windows, Ubuntu and macOS allows LEGO track planning.

  • Paid software – multi platform support for Windows, Ubuntu and macOS
  • Inventory tool
  • Easy drag and drop tools

4dBrix nControl app for LEGO train track planning

Demo image from Elphiel on Eurobricks. 

Other LEGO train track planning software