Last Updated: August 20, 2026
Calculators

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Every calculator runs free in the browser to AS 1720.1, with certified manufacturer data and fully traceable checks.

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Live Jul 2026 Live in Australia
Isometric view of a wooden platform resting on supports with red downward arrows indicating vertical load across its surface.
CLT

CLT Design

Live Jun 2026 Live in Canada
Cross‑section of a wooden door showing gaps and sound waves on both sides to illustrate sound transmission or insulation.
Dowel

Dowel / Bolt Design

Frequently asked questions

Partnering with SPEC Toolbox.

Who can become a partner?
Any building product manufacturer with certified technical data (ETA, national certification, or equivalent) for a product used in structural timber design — screws, connectors, CLT panels, glulam, and related categories.
What does a partner get from being listed?
A dedicated, co-branded partner page, a calculator pre-filtered to your products, and visibility across every relevant category and calculator page where engineers are actively designing with your product category.
Is there a cost to integrate?
Partnership is a paid annual arrangement, tiered by scope. Get in touch via the form to discuss pricing for your product category and region.
How long does integration take?
Typically a few weeks from data handover to going live, depending on the complexity of the product category and how many regions are in scope.
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