With LDL calculated calculator, you will quickly calculate LDL concentration based on the Friedewald formula. The Friedewald formula allows you to calculate LDL based on the concentration of total cholesterol, HDL cholesterol and triglycerides. Friedewald formula can be used only when the concentration of triglycerides is <4.5 mmol/L (<400 mg/dL), if the concentration is above these values – LDL concentration should be determined by direct method.

## LDL calculated calculator – calculate it

To calculate LDL cholesterol, determine the following parameters in the selected units:

- total cholesterol concentration in mg/dL or mmol/L
- HDL cholesterol concentration in mg/dL or mmol/L
- triglyceride (TG) concentration in mg/dL or mmol/L

Remember that the tests of the above parameters should be performed from the same sample in the same medical laboratory.

Enter the values of the parameters in the appropriate fields, and then select the units of concentration. The calculator will automatically provide the value of calculated LDL cholesterol.

## Calculated LDL – how to calculate?

For concentrations given in mmol/L, the formula for calculating LDL is:

LDL concentration = Triglyceride concentration – HDL concentration – (triglyceride concentration/2.2).

#### For concentrations given in mg/dL, the formula to calculate LDL is:

LDL concentration = Triglyceride concentration – HDL concentration – (triglyceride concentration/5)

There are really many variants for calculating LDL, as each parameter can have different units of concentration. Therefore, the easiest way is to use the calculator above.

## Other calculators

I cordially invite you to the A-Z list of calculators and converters. There you will find quite a few medical calculators. With them you will convert the concentration of analytes, calculate the calculated parameters, and evaluate the given parameters according to medical scales.

**Disclaimer**: This page is for informational purposes only. Conversion rates have been compiled based on publicly available information. All information should be confirmed and verified. The data on the site is not a substitute for professional medical advice. Any information, result, conversion should be consulted with a doctor.