Terms of Use

Last updated: 2026-08-10.

Acceptance of these terms

By using this site, its calculators, and its reference content, you agree to these terms. If you don't agree, please don't use the site.

What this site provides

This site provides woodworking calculators (board feet and lumber cost, cut-list optimisation, wood movement, miter/bevel angles, and finished weight) and reference content (species data, joinery techniques, and dimensional/conversion tables) for informational and planning purposes. All figures are computed from formulas and reference data described on the site itself, and every reference number states the source it was drawn from where applicable.

Not professional advice

The calculators and reference content on this site are intended as planning aids, not as a substitute for professional structural, engineering, or safety judgment. Wood movement, joinery strength, and load-bearing calculations involve real material variation — actual wood is not a perfectly uniform, textbook material, and factors like grain runout, moisture history, and individual board defects can cause real results to differ from a calculated estimate. For structural work, load-bearing furniture, or any application where failure could cause injury or significant property damage, consult a qualified professional rather than relying solely on this site's calculators.

Accuracy

We make a genuine effort to source and verify the reference data on this site, particularly wood-movement coefficients, and to compute every worked example through our own calculators rather than typing figures from memory. That said, we cannot guarantee the site is free of errors, and wood is a natural material with inherent variability that no calculator can fully capture. Always verify critical dimensions and movement allowances against your own material before committing an irreversible cut.

Your use of the site

You may use the calculators and reference content for personal or commercial woodworking projects, free of charge. You may not scrape, republish, or redistribute substantial portions of this site's reference content or underlying data without our written permission. Species names, joinery terminology, and dimensional-lumber standards referenced on this site are general woodworking knowledge and published industry standards, not our proprietary content, and using that general knowledge in your own work is not restricted by these terms.

Purchases

The Shop Reference Pack is a digital product delivered electronically after purchase. Because it is a digital good delivered immediately, purchases are generally non-refundable except where required by law or at our discretion for a genuine technical delivery failure. Donations made through the "Support Us" page are voluntary and non-refundable.

Third-party links and sister sites

This site links to other independently operated websites, including a small number of sister sites under the same ownership. We are not responsible for the content, accuracy, or practices of any third-party site we link to.

Limitation of liability

To the fullest extent permitted by law, this site and its operators are not liable for any direct, indirect, incidental, or consequential damages arising from your use of the calculators or reference content, including but not limited to material waste, project delays, or structural issues arising from reliance on a calculated figure.

Changes to these terms

We may update these terms as the site evolves. The "Last updated" date above reflects the most recent revision.

Contact

Questions about these terms can be sent to the email address on our contact page.