Medical Disclaimer

These calculators are provided for educational and informational purposes only. They are not medical advice, diagnosis, or treatment. Results are estimates and may not apply to every person. Do not use calculator results to start, stop, or change medication or treatment. Consult a qualified healthcare professional for personal medical advice.

5 Cholesterol Tools

Cholesterol & Lipid Calculators

Evidence-based cholesterol calculators using established formulas (Friedewald and Martin-Hopkins) with clear limitations stated.

LDL Calculator

Calculate LDL cholesterol using the Friedewald equation (fasting required) or Martin-Hopkins equation (accurate at non-fasting triglyceride levels). Enter total cholesterol, HDL, and triglycerides.

Calculate LDL Friedewald/Martin-Hopkins

Non-HDL Calculator

Calculate non-HDL cholesterol: Total Cholesterol minus HDL. Non-HDL includes all atherogenic lipoproteins and is an emerging risk marker. No fasting required for meaningful interpretation.

Calculate Non-HDL Total - HDL

Total/HDL Ratio Calculator

Calculate total cholesterol divided by HDL cholesterol. Ratio < 4.0 is desirable, 4.0-5.0 is borderline high, > 5.0 is high. A strong predictor of cardiovascular risk.

Calculate Ratio Risk Predictor

LDL/HDL Ratio Calculator

Calculate LDL cholesterol divided by HDL cholesterol. Ratio < 2.0 is optimal, 2.0-3.0 is near optimal, > 3.0 is high. Helps assess cardiovascular risk beyond total cholesterol.

Calculate Ratio Risk Ratio

Cholesterol Unit Converter

Convert cholesterol values between mg/dL (US convention) and mmol/L (international). Includes reference ranges and conversion formulas.

Convert Unit Conversion