Terms of Use

Last updated: October 29, 2026

By using spademath.com you agree to these terms.

Estimates only

SpadeMath calculators and articles provide general estimates for planning purposes. They are not professional engineering, construction or legal advice. Actual material requirements vary with site conditions, products and installation methods. Confirm quantities with your supplier and follow manufacturer instructions and applicable building codes.

No warranty

The site is provided "as is" without warranties of any kind. We do not guarantee that results are accurate, complete or suitable for your project.

Limitation of liability

To the fullest extent permitted by law, SpadeMath is not liable for any loss or damage arising from your use of the site, including the cost of materials ordered based on our estimates.

Third-party links

We may link to third-party websites, including retailers. We are not responsible for their content, prices or policies.

Intellectual property

The text, design and code of this site belong to SpadeMath. You may share links and short quotes with attribution.

Changes

We may update these terms at any time. Continued use of the site means you accept the updated terms. Questions: see our contact page.