Terms of use
The basic rules for using BJJMath. Plain, short, and fair.
Last updated: June 2026.
By using BJJMath, you agree to these terms. If you don't agree, please don't use the site.
Use of the site
You may use BJJMath's calculators and content for your own personal, non-commercial use. You may share links freely. You may not scrape the site at scale, republish the calculators or substantial content as your own, or use the site in a way that disrupts it for others.
No professional relationship
Using these tools does not create a doctor–patient, coaching, or other professional relationship. See the disclaimer for the full picture: the tools are informational and the health and recovery tools are not medical advice.
Intellectual property
The BJJMath name, design, written content and calculator implementations are owned by BJJMath and protected by applicable law. "IBJJF," "ADCC," and brand names referenced on the site are the trademarks of their respective owners; BJJMath is independent and unaffiliated.
Third-party links
The site links to third-party retailers and resources, including affiliate links (see the affiliate disclosure). We are not responsible for the content, products, or policies of those third parties.
Changes
We may update the site and these terms over time. Continued use after a change means you accept the updated terms.
Contact
Questions about these terms: hello@bjjmath.com.