The Fastest Way to Design
Mass Timber in the US.

Access the latest NDS design methods and the entire USA mass timber supply chain in one place.

Trusted By Engineers & Suppliers

Recent Product Updates

The Fastest Growing Platform for Timber Specification

Release 2.1.2- USA and Canada Beta Version

Release 2.1.2- USA and Canada Beta Version

Release 2.1.7 – Screw Connections

Release 2.1.7 – Screw Connections

Release 2.1.8 – Analysis & One Page Summaries!

Release 2.1.8 – Analysis & One Page Summaries!

SPEC Toolbox Release!

SPEC Toolbox Release!

Our latest Blogs

Explore our newest insights, updates, and expert takes on timber design, engineering, and sustainability.

Your Direct Link to the US Supply Chain

  • Access leading US suppliers tested products  and PRG320 standardized grades.
  • Instantly switch suppliers to optimize your design.
  • Ensure your design can actually be procured and built.

Automate Calculations. Reclaim Your Time.

  • Turn days of manual NDS crunching into minutes of automated analysis.
  • Access the latest Eurocode methods, fully converted into Imperial units.
  • Iterate instantly without rebuilding complex spreadsheets.
  • Free up your time for actual engineering.

Not A Black Box

  • Verify every step with transparent, easy-to-follow calculations.
  • Visualize complex support configurations instantly.
  • Understand your inputs with built-in, contextual education.

Our Partner Updates

The Fastest Growing Platform for Timber Specification

Testimonials

Hear from the engineers, educators, and students who are using SPEC Toolbox to transform the way they build.

Engineers – Access For FREE

Explore our newest insights, updates, and expert takes on timber design, engineering, and sustainability.

FREE

$0

For individuals and small teams starting their journey.

The free version gives you access to:

  • Advanced CLT design with supply chain
  • Advanced GLT design with supply chain
  • Core and detailed screw calculation modules
  • Hanger design modules 
  • Access to free-tier supply chain partners
  • Collaboration tools (share & chat)
  • Project and calculation duplication
  • Simple and extended PDF report printing
  • Multi-language support 
Access For Free

PRO

$1000 LICENSE YEARLY OR

$400 QUARTERLY

For professionals who need enhanced flexibility, specialized calculators, and access to the pro supplier network.

Everything in the free version plus:​​​

  • Specialized connection calculators (Dowels, Nails)
  • Light-frame construction modules
  • Manual input override for all calculations 
  • Full regional flexibility for design codes and standards 
  • Access to pro-tier supply chain partners
Choose Plan

ENTERPRISE

$X

The complete solution for large companies requiring unlimited licenses, advanced administration, and dedicated support.

Everything in the Pro version plus:​​

  • Unlimited Pro licenses for your entire company 
  • Advanced user and project management 
  • Ability to add your own custom suppliers and grades
  • Unlimited, dedicated technical support
  • Significant license discounts
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