Medical Disclaimer
Last updated 2026-06-18
Not medical advice
The health and fitness calculators on Numbarn — including BMI, BMR, TDEE, calorie, body fat, GFR, BAC, pregnancy, and related tools — are provided for general educational purposes only. They are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Consult a professional
Always seek the advice of a qualified healthcare provider with any questions you have regarding a medical condition, diet, exercise program, or health goal. Never disregard professional medical advice or delay seeking it because of something you read or calculated on this website.
Estimates, not diagnoses
Health calculator outputs are estimates based on general population formulas. Individual results vary based on age, sex, genetics, medical history, medications, and other factors that these calculators cannot account for. A BMI number, for example, does not tell you whether you are healthy — only a clinician can make that assessment.
Emergency situations
If you are experiencing a medical emergency, call your local emergency number immediately. Do not use this website to make urgent health decisions.
Sources
Where possible, health calculators cite the formulas and research they are based on (e.g. Mifflin-St Jeor for BMR, CKD-EPI for GFR, CDC/WHO for BMI categories). These citations are listed on each calculator page under "Sources."