Skip to content

LDL Calculator

Estimate LDL cholesterol from total cholesterol, HDL, and triglycerides with the Friedewald equation in mg/dL. Includes assumptions, common limits, examples, and a medical disclaimer.

mg/dL

Use the total cholesterol value from the same lipid panel.

mg/dL

HDL should not be higher than total cholesterol.

mg/dL

The Friedewald equation is commonly used only below 400 mg/dL.

Common use limits

This calculator uses the Friedewald equation in mg/dL. It is commonly used only when triglycerides are below 400 mg/dL.

The output is an LDL estimate from other lipid values. It does not replace a direct LDL measurement or tell you what treatment is right for you.

This LDL calculator provides an educational estimate and is not medical advice, a diagnosis, or a treatment target. Do not start, stop, or change medication, supplements, diet, or follow-up based on this result. Use the LDL value and method reported by your laboratory and review the full panel with a qualified healthcare professional who can assess overall cardiovascular risk. Seek urgent care for concerning acute symptoms rather than using a cholesterol calculation to assess an emergency.

Powered by CalcTide