You are responsible for your own training, equipment, and spotters. A heavy single can injure you. Do not treat a result as medical advice or as permission to max out.
Formulas can be wrong for a given lifter, and a rounded plate weight can differ from the precise median. The site is provided as is, without a warranty that every result is accurate or that the site will stay online.
Do not copy the pages and publish them as your own. The equations themselves are published methods and are not owned by this site. Questions go to contact.