Medical Disclaimer

FitMeter calculators provide estimates for informational and educational purposes only. The information on this site is not intended as, and does not constitute, medical advice, diagnosis, or treatment. Do not use any output from this site as a substitute for advice from a qualified healthcare provider.

Limitations of formula-based estimates

All calculators on FitMeter use population-level equations validated on specific study groups. These formulas carry inherent margins of error — typically ±10–15% for metabolic calculations — and may produce inaccurate results for individuals who fall outside the studied population (e.g., very lean athletes, individuals with certain medical conditions, or those taking medications that alter metabolism).

Who should not rely on this site

You should consult a physician, registered dietitian, or qualified exercise professional before making changes to your diet or exercise routine, particularly if you:

• Have a diagnosed medical condition
• Are pregnant or breastfeeding
• Have a history of eating disorders
• Are under 18 years of age
• Are taking prescription medications that affect weight, metabolism, or heart rate

Eating disorders

If you or someone you know is struggling with disordered eating, please seek help. In the United States, contact the National Eating Disorders Association (NEDA) Helpline at 1-800-931-2237, or text "NEDA" to 741741.