Make mass timber an accessible tool.

Software saves time for engineers making mass timber a true option for all projects.

Leverage The Best Design Computations.

Take advantage of the world’s best design methods and third party review process.

Optimise For The Most Cost Effective Solution.​

Calculation confidence improves efficiency on design, improving cost effectiveness for your clients.

Don’t Worry About Calculation Maintenance.

Suppliers can change their design data and design methods update. This results in maintenance costs that are not necessary for engineers to burden.

Delegate With Confidence.​

Controlled peer reviewed software enables engineers to delegate to team members with calculation confidence.

Access to existing 12-member design calculators including.

  • CLT Floor Design
  • European Char Models
  • Point Loads
  • CLT Wall Design
  • GLT Beam
  • GLT Column
  • GLT Beam Penetration
  • Crushing

Coming soon through 2024

  • Screw design (EC5)
  • Dowel and bolt design
  • Steel plate design
  • Net cross section failure
  • Tolerances
  • Ribbed decks
  • Timber concrete composites
  • And more


Having started with timber engineering more than 20 years ago and delivered structures in Europe, Asia and finally in Australia the process of getting designs valuated and approved by local authorities has been a challenge. Timeframes blowing out in the process. CLT Toolbox has streamlined the design and documentation making it easy to refer to the correct clause in the required standard. It also helps us immensely when comparing different supplier’s materials and assessing like for like solutions. CLT Toolbox is easy to use, adjustable input for any supplier and has clear explanation for certifier/authorities.

Bernhard Waschl

CLT toolbox has helped simplify the organisation and transparency of engineering calculations by providing a ‘once stop shop’ for all relevant designs. I like the explanations attached to some of the calculations which is a big bonus for the younger engineers learning the ropes, which in turn takes gives some time back to the senior engineers not having to repeat the same concepts over. I think its an important tool to breaking down the barriers of Mass Timber design which historically has had a varied approach within the industry. 

Matthew Burke 
Structural Engineer

“The CLT Toolbox is an essential piece of software for any organisation working with mass timber. It provides efficient workflows for design areas that need to synthesize local and overseas codes, it greatly assists with managing QA and also serves as a solid educational tool for training new team members. The team at CLT Toolbox have delivered an app that the market really needs” 

Robbert Svars
General Manager