About FitnessProGuide
"Our mission is to make professional-grade fitness science accessible to everyone - free, fast, and without a signup form."
FitnessProGuide was built on a simple observation: fitness calculators online were either ad-riddled, paywalled, signup-required, or failed to explain what their results meant. We built something different - 37+ free calculators, 3 AI tools, zero accounts, and every result backed by a cited source.
The People Behind FitnessProGuide
We are a small, focused team. Every tool is built with intention, every formula is cited, and every health-related interpretation is reviewed by a credentialed professional.
James Mitchell
Founder & Fitness Tool Developer
Built FitnessProGuide to solve a real problem - professional fitness science locked behind signups and ads. Researches and implements every calculator formula using peer-reviewed academic sources.
Linda Murray
Nutrition & Fitness Science Reviewer
Brings 20+ years of clinical nutrition experience. Reviews all nutrition and body composition calculator content for scientific accuracy, formula validity, and appropriate result interpretation.
Our Review Board
FitnessProGuide maintains an independent review board of credentialed fitness and health professionals who evaluate our calculator content for scientific accuracy. Every nutrition and body composition calculator on this platform has been reviewed by at least one board member.
Linda Murray
Nutrition & Fitness Science Reviewer
How We Work
Peer-Reviewed Only
Every formula is sourced from published academic research or official health body guidelines. We cite every source on every page.
Expert Reviewed
All health-related content is reviewed by certified fitness and nutrition professionals before publication.
See our full editorial policyNo Sponsored Results
Calculator results are never influenced by commercial relationships. Our outputs are formula-only.
Get in Touch
Questions, corrections, or collaboration inquiries welcome.
Contact us