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Making Mass Timber
Easy To Specify

We develop innovative tools that empower engineers to design timber buildings efficiently, sustainably, and profitably.

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Categories

  • Partners Partners Partners
  • CLTCLT
  • GLTGLT
  • ScrewsScrews
  • Light FrameLight Frame
  • BracketsBrackets
Partners
CLTCLT
  • European Union
  • United States
  • Canada
  • Australia
GLTGLT
  • European Union
  • United States
  • Canada
  • Australia
ScrewsScrews
  • European Union
  • United States
  • Canada
  • Australia
Light FrameLight Frame
  • European Union
  • Australia
BracketsBrackets
  • European Union
  • Australia

Trusted By Engineers & Suppliers

Recent Product Updates

The Fastest Growing Platform for Timber Specification

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SPEC Toolbox Release!

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Release 2.1.8 - Analysis & One Page Summaries!

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Release 2.1.7 - Screw Connections

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Release 2.1.6 - Major Updates & New National Annexes

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Release 2.1.5 - New Bracket Calculator Category

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Release 2.1.4 - Fire Design!

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Release 2.1.3 - Focus on Perpendicular to Grain Compression

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Release 2.1.2- USA and Canada Beta Version

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Release 2.1.1 - CLT to Steel Beam Connection Details, Dowel/Bolt Updates, Screw Filtering & More!

We Build Tools To Help You SPEC Innovation

Powerful design tools that help engineers and architects deliver smarter, more cost-effective timber structures.

Apply for Beta Program

Our latest Blogs

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

View All Blogs

SPEC Toolbox Is Now Live In USA & Canada

The moment you’ve been waiting for is here. After a successful 6-month beta program working closely with leading engineers and suppliers, we are thrilled to announce the official launch of…

  • September 23, 2025
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CLT Toolbox rebrands to SPEC Toolbox

CLT Toolbox is now SPEC Toolbox Go To The App MELBOURNE, AUSTRALIA – September 3, 2025 – SPEC Toolbox, a leading design platform for mass timber, today announced its rebranding…

  • September 2, 2025
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Reaching The Potential Via The Testing of Screws

What are ETAs and ICC-ESRs? When it comes to building with timber, choosing the right fasteners is crucial for ensuring structural integrity and safety. In order for fasteners to be…

  • September 1, 2025
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Brittle Failure of Timber Connections (prEN 1995-1-1:2023)

Introduction: Brittle vs. Ductile Failure in Structures In engineering, brittle failure refers to a sudden fracture of a material or component with little or no prior deformation or warning. This…

  • August 22, 2025
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Shear Reinforcement of Timber Beams

Historically, one of the biggest drawbacks in using timber and mass timber products for building’s main load bearing structure was the massive sections needed to overcome relatively long or medium…

  • August 13, 2025
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Your Direct Link To The Supply Chain Of Manufactured Products

  • Design with real-world, verified product data.
  • Eliminate technical barriers and compatibility issues.
  • Seamlessly switch between suppliers to optimise your design.

Automate Your Calculations. Reclaim Your Time.

  • Reduce Design Cycles: Turn days of manual calculations into minutes of automated analysis.
  • Instant Iterations: Immediately see the impact of design changes without rebuilding formulas.
  • Focus on What Matters: Free up your valuable time to focus on innovative engineering, not spreadsheet maintenance.

Not A Black Box

  • Dynamic imagery for simple understanding
  • Education On Inputs
  • Transparent Calculations That Are Easy To Follow
  • Understand supply chain availability

Testimonials

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

“The SPEC Toolbox is an essential piece of software for any organization 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
…

Robbie Svars
General Manager
SPEC toolbox has helped simplify the organization 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
…

Matthew Burke 
Structural Engineer
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
…

Bernhard Waschl
Director

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

€300 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
Contact Us

FREE

$0

For individuals and small teams starting their journey.

The free version give you access to:

  • Access to basic CLT with supply chain
  • Access to basic GLT with supply chain.
  • Core screw calculation module
  • Hangers design module
  • Access to free-tier supply chain partners
  • Collaboration tools (share & chat)
  • Simple PDF report printing
  • Multi-language support
Access For Free

PRO

$2500 AUD/LICENSE YEARLY

$750 AUD/QUARTERLY

Everything in the free version plus:

  • Advanced CLT design with full supply chain integration
  • Advanced GLT design with full supply chain integration
  • Light-frame construction modules
  • Advances connection design (dowels, nails, screw details)
  • Access to Pro-tier supply chain partners
  • Manuel input flexibility for all calculations
  • Ability to add custom suppliers and material grades
  • Project and calculation duplication features
  • Regional design code flexibility
  • Extended PDF report printing and customization
Choose Plan

ENTERPRISE

$X

For companies looking for multiple license deals across their company.

Everything in the pro version plus:

  • Unlimited pro licenses for your company
  • Advanced user management and project sharing
  • Unlimited technical support
  • Dedicated onboarding and training options
  • Significant license discounts
Contact Us

FREE

$0

For individuals and small teams starting their journey.

The free version give you access to:

  • Access to basic CLT with supply chain
  • Access to basic GLT with supply chain.
  • Core screw calculation module
  • Hangers design module
  • Access to free-tier supply chain partners
  • Collaboration tools (share & chat)
  • Simple PDF report printing
  • Multi-language support
Access For Free

PRO

$2500 AUD/LICENSE

$750 AUD/QUARTERLY

For structural engineers looking to design with mass timber. The pro version gives access to:

Everything in the free version plus:

  • Advanced CLT design with full supply chain integration
  • Advanced GLT design with full supply chain integration
  • Light-frame construction modules
  • Advances connection design (dowels, nails, screw details)
  • Access to Pro-tier supply chain partners
  • Manuel input flexibility for all calculations
  • Ability to add custom suppliers and material grades
  • Project and calculation duplication features
  • Regional design code flexibility
  • Extended PDF report printing and customization

20% discount sponsored by:

Just email us your TDS (ENZ)  membership number and we’ll give you the discount.

Choose Plan

ENTERPRISE

$X

For companies looking for multiple license deals across their company.

Everything in the pro version plus:

  • Unlimited pro licenses for your company
  • Advanced user management and project sharing
  • Unlimited technical support
  • Dedicated onboarding and training options
  • Significant license discounts

Contact Us

Beta Program

$1000 USD/YEARLY

$400 USD/QUARTERLY

For engineers who want to have the latest tools as we release them into USA/Canada.

Features:

  • Advanced CLT design with full supply chain integration
  • Advanced GLT design with full supply chain integration
  • Light-frame construction modules
  • Advances connection design (dowels, nails, screw details)
  • Access to Pro-tier supply chain partners
  • Manuel input flexibility for all calculations
  • Ability to add custom suppliers and material grades
  • Project and calculation duplication features
  • Regional design code flexibility
  • Extended PDF report printing and customization
Apply For Beta Program

Beta Program

$1000 USD/YEARLY

$400 USD/QUARTERLY

For engineers who want to have the latest tools as we release them into USA/Canada.

Features:

  • Advanced CLT design with full supply chain integration
  • Advanced GLT design with full supply chain integration
  • Light-frame construction modules
  • Advances connection design (dowels, nails, screw details)
  • Access to Pro-tier supply chain partners
  • Manuel input flexibility for all calculations
  • Ability to add custom suppliers and material grades
  • Project and calculation duplication features
  • Regional design code flexibility
  • Extended PDF report printing and customization
Apply For Beta Program

Contact Us

If you have questions, feedback, or need to report an issue, just send us a message — we’re here to help!