LDL Calculator

LDL Form

mg/dL
mg/dL
mg/dL

Results

LDL level

0mg/dL

Table of Contents

1

What is LDL Calculator?

Estimate LDL cholesterol using the Friedewald equation implemented on the page.

2

How to Use This Calculator

  1. Enter or select Total Cholesterol, HDL Cholesterol, Triglycerides.
  2. Check the unit beside each measurement. For a percentage or rate, use the scale and time period stated in the form.
  3. Choose Calculate, then compare the output with the formula and example below. If you change a value or option, calculate again to update the result.
3

Formula Used

LDL = total cholesterol−HDL−triglycerides/5, with all values in mg/dL.
4

Variables Explained

InputWhat it means
Total CholesterolThe laboratory cholesterol concentration, entered in the selected mass or molar unit.
HDL CholesterolThe laboratory cholesterol concentration, entered in the selected mass or molar unit.
TriglyceridesUse the observed finding or laboratory value for this criterion, following the definition shown in the form.
5

Worked Example

Total cholesterol 200, HDL 50 and triglycerides 100 give LDL=130 mg/dL.

6

Why Use This Calculator?

Use the calculation to make the method and its inputs easier to check with a healthcare professional. Its meaning depends on the clinical setting and on whether the underlying method is appropriate for that person.

7

Common Mistakes

    • The equation has important limitations, including high triglycerides; it is not a direct LDL measurement.
8

Frequently Asked Questions

Is this result a diagnosis or treatment instruction?

No. It describes a calculation or score from the supplied information. A qualified clinician must check the measurements, the method’s applicability and the wider clinical picture.

Can I enter the units from any lab report?

Use the units specified in the form and select a conversion only where the page provides one. Different substances need different conversion factors; a mismatch can produce a plausible but incorrect result.

9

Sources & References

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