About ZenFit Tools
ZenFit Tools is an educational physiological analytics platform engineered to help athletes and fitness enthusiasts understand published sports science formulas, metabolic models, and body composition estimates.
Our Educational Mission
In an online fitness space full of black-box algorithms and unsubstantiated claims, ZenFit Tools emphasizes transparent mathematics. Every equation in our suite of 19 specialized calculators is directly derived from published sports science and clinical nutrition literature, including research published in the American Journal of Clinical Nutrition, British Journal of Sports Medicine, and Medicine & Science in Sports & Exercise.
Client-Side Biometric Computation
Calculations run entirely in your local web browser. No personal biometric or physiological inputs are transmitted or stored on remote calculation servers.
Published Equations
Calculators explicitly display their underlying formulas, methodological context, scientific citations, and physiological boundary conditions.
Educational Scope & Safety Notice
Calculations represent theoretical population models and statistical estimates. Not medically reviewed. Not intended as medical or diagnostic advice.
Methodology & Quality Guidelines
Our tools benchmark formulas against guidelines and normative data established by recognized sports science organizations, including the American College of Sports Medicine (ACSM) and the International Society of Sports Nutrition (ISSN).