LDL Calculator
Calculate LDL cholesterol using the Friedewald equation from total cholesterol, HDL, and triglycerides.
Input Parameters
Enter details for calculation.
Calculated LDL
Expert Tip
Friedewald is inaccurate when TG > 400 mg/dL. Optimal LDL < 100, Near optimal 100–129, Borderline 130–159, High 160–189, Very high ≥ 190.
Calculation Methodology & Details
Formula
The Friedewald equation estimates VLDL as TG/5. Not valid when triglycerides exceed 400 mg/dL or in non-fasting samples.
Important Disclaimer
The calculations provided are for educational and general informational purposes only. They do not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
How LDL is Calculated (Friedewald)
Follow these steps to use this calculator:
Enter Lipid Values
Total cholesterol, HDL, and fasting triglycerides.
Read Calculated LDL
View LDL estimate and risk category.
Related Calculators
View All Health Tools →Detailed Insights & Expert Guide
ℹ️ About this Calculation
This metabolic health calculator assesses cardiovascular risk profiles, lipid panel balances, metabolic syndrome diagnostic criteria, and serum biomarker thresholds based on established clinical cardiology guidelines.
Variable Glossary
Biomarker Values
Total cholesterol, HDL, LDL, triglycerides, uric acid, or waist circumference measurements.
Risk Ratios & Scores
Atherogenic index, 10-year CVD risk percentages (Framingham / QRISK3), and Non-HDL lipid targets.
How to Calculate Step-by-Step
Step 1
Select your preferred lipid concentration units (mg/dL or mmol/L).
Step 2
Input your latest lipid panel lab results and demographic factors.
Step 3
View calculated ratios, cardiovascular risk category, and clinical recommendations instantly.