All tools
LDL Calculator
Calculate LDL from total cholesterol, HDL and triglycerides.
Educational estimate only — not a diagnosis. Values are calculated in your browser and never stored. Discuss your results with a licensed clinician.
Frequently asked questions
When is the Friedewald LDL not valid?
It becomes unreliable when triglycerides are 400 mg/dL (4.5 mmol/L) or higher. In that case ask for a directly measured LDL.
What LDL should I aim for?
Targets depend on your overall heart risk. Many people aim for under 100 mg/dL, and lower if higher-risk — discuss your goal with your doctor.
Embed this calculator
Add this free calculator to your own website — copy the code below.