About FitCalc Studio

Our Mission

FitCalc Studio is built to make high-trust physiological and metabolic calculations accessible to everyone. We provide eight specialized health calculators alongside our comprehensive Health Knowledge Hub, offering clear, clinically grounded insights into body composition, energy balance, and dietary science.

Unlike black-box calculators or commercial wellness apps that hide formulas behind paywalls, FitCalc Studio calculates everything 100% locally in your browser with zero data harvesting, full mathematical transparency, and zero server latency.

Scientific Methodology & Clinical Sources

Every mathematical model implemented across our calculators and health guides strictly adheres to published, peer-reviewed clinical standards:

• Basal Metabolic Rate (BMR): Calculated using the Mifflin-St Jeor equation (American Journal of Clinical Nutrition, 1990), recognized by the Academy of Nutrition and Dietetics as the most reliable predictive equation for non-obese and obese individuals.
• Total Daily Energy Expenditure (TDEE): Standardized Physical Activity Levels (PAL) derived from the Food and Agriculture Organization (FAO) and World Health Organization (WHO) energy requirement consultations.
• Body Composition & Fat %: Based on the United States Navy Circumference Method (Hodgdon & Beckett, Naval Health Research Center), validated against hydrostatic weighing.
• Ideal Body Weight: Computed via the Devine (1974) and Robinson (1983) clinical formulas standard in pharmacokinetics and nutritional planning.
• Dietary & Hydration Guidelines: Aligned with the WHO Technical Report Series 916 (Diet, Nutrition and the Prevention of Chronic Diseases) and European Food Safety Authority (EFSA) fluid intake standards.

Editorial Standards & Health Knowledge Hub

We maintain an extensive, peer-referenced Health Knowledge Hub covering metabolic science, energy expenditure physiology, macronutrient distribution, and hydration science. All guides undergo rigorous editorial review to ensure factual accuracy, citation integrity, and clinical alignment before publication.

User Privacy & Local Execution

Your personal metrics (such as age, sex, height, weight, and activity level) are stored strictly within your browser's localStorage. No personal biometric records are transmitted, recorded, or monetized on any external servers.

Medical Disclaimer

The tools, guides, and reports provided by FitCalc Studio are intended strictly for educational, informational, and preventative health awareness. They do not constitute formal medical diagnosis, treatment, or clinical prescriptions. Always consult a qualified physician or registered dietitian before undertaking significant changes to your dietary or physical exercise regimen. Review our full Medical Disclaimer.