Medical Disclaimer

Not medical advice

MyHealthCalcs and its calculators do not provide medical advice, diagnosis, or treatment. The results generated by our calculators are estimates based on established mathematical formulas and statistical population data. They are intended to give you a starting point for understanding your health metrics — not to replace a professional evaluation.

Always consult a qualified healthcare provider — such as a physician, registered dietitian, certified personal trainer, or other licensed professional — before making decisions about your diet, exercise program, medications, or any other aspect of your health care.

Accuracy of estimates

All calculators use validated formulas from peer-reviewed research, but results are population-level estimates with inherent error ranges. Individual values may differ significantly from calculator outputs due to:

• Individual metabolic differences
• Muscle-to-fat ratios not captured by weight and height alone
• Medical conditions affecting metabolism or body composition
• Medications that influence weight, fluid retention, or metabolism
• Age-related changes not fully accounted for in formulas
• Measurement error in circumference-based methods

Specific calculator limitations

• BAC Calculator
  Estimates only. Actual BAC depends on food intake, medications, liver function, and individual tolerance. Never use this calculator to determine whether you are safe to drive.
• Pregnancy calculators
  Predictions are estimates. Due dates, fertile windows, and weight gain targets vary significantly between individuals. Always follow your OB/GYN's specific guidance.
• Body fat calculators
  Circumference methods have ±3–5% accuracy compared to clinical methods like DEXA scanning. Results are not suitable for clinical diagnosis.
• Calorie calculators
  TDEE and BMR calculations are estimates based on averages. Actual needs vary by 10–20% between individuals with the same inputs.
• Heart rate zones
  The 220-minus-age formula has ±10–20 bpm individual variation. Supervised testing is the only way to know your true maximum heart rate.

Emergency situations

If you are experiencing a medical emergency, call 911 (US) or your local emergency number immediately. Do not rely on any website or calculator for emergency medical guidance.

No liability

MyHealthCalcs, its operators, and contributors are not liable for any harm, loss, or injury arising from the use of or reliance on the information or calculator results provided on this site. Use of this site is at your own risk.

Third-party content

This site may reference external resources, research, or links to third-party websites. We are not responsible for the accuracy or content of external sources.