Cholesterol Ratio Calculator

About Cholesterol Ratio Calculator

This cholesterol ratio calculator estimates key lipid ratios used in cardiovascular risk assessment: Total/HDL, LDL/HDL, and TG/HDL. Enter values in either mg/dL or mmol/L; the tool converts automatically and classifies your ratios by standard reference ranges.

Lower ratios generally indicate better lipid balance and lower risk for atherosclerosis. For context, also track blood pressure, BMI, and aerobic fitness.

FAQ

• How are ratios computed?
  Total/HDL = Total ÷ HDL; LDL/HDL = LDL ÷ HDL; TG/HDL = Triglycerides ÷ HDL.
• Healthy targets?
  Total/HDL <5 (optimal <3.5); LDL/HDL <3; TG/HDL <2 (mmol/L) or <4 (mg/dL).
• Unit conversion?
  1 mmol/L = 38.67 mg/dL for cholesterol; 1 mmol/L = 88.57 mg/dL for triglycerides.
• What influences cholesterol?
  Diet, genetics, exercise, weight, medications, and medical conditions.
• Is this diagnostic?
  No – ratios complement professional lab interpretation and clinical context.

Disclaimer

This tool is for informational and educational purposes only and should not replace medical advice. Always consult a qualified clinician for lipid management.

References

• Centers for Disease Control and Prevention (CDC) – High Cholesterol Facts
• American Heart Association (AHA) – About Cholesterol and Lipoproteins
• National Heart, Lung, and Blood Institute (NHLBI) – High Blood Cholesterol: What You Need to Know
• European Society of Cardiology / European Atherosclerosis Society (ESC/EAS) – Guidelines for the Management of Dyslipidaemias
• Millán J et al. (2009) – HDL/LDL Ratios and Cardiovascular Risk — Journal of Clinical Lipidology
• da Luz PL et al. (2008) – High Ratio of Total to HDL Cholesterol Predicts Atherosclerosis — Clinical Chemistry
• World Health Organization (WHO) – Cardiovascular Diseases and Lipid Risk Factors