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Cholesterol Units Converter

Health

Convert cholesterol and triglyceride values between mg/dL and mmol/L instantly using standard clinical lipid conversion factors, side by side.

Reviewed by the thecalcu.com team · Last updated July 11, 2026

1500

Value in mg/dL

200
Value in mmol/L
5.17

This calculator computes your Value in mg/dL, Value in mmol/L from the values you enter.

Inputs
Lipid ValueValue Is InLipid Type
Outputs
Value in mg/dLValue in mmol/L

What is a Cholesterol Units?

A Cholesterol Units Converter translates cholesterol and triglyceride values between the two measurement systems used around the world: milligrams per deciliter (mg/dL), the standard in the United States, and millimoles per liter (mmol/L), used in most of Europe, Canada, Australia, and elsewhere. The conversion is a simple multiplication or division by a fixed molar-mass-based factor, 38.67 for cholesterol and 88.57 for triglycerides.

This matters whenever a lab report, medical study, or international health resource presents cholesterol in a unit different from the one you're used to. Rather than doing the arithmetic by hand, this calculator returns both unit values instantly so you can compare results across reports, countries, or care providers without confusion.

Why Use a Cholesterol Units Converter?

Lipid panels reported in an unfamiliar unit can be difficult to interpret against the reference ranges you already know. Someone used to seeing "under 200 mg/dL" for total cholesterol may struggle to judge whether "5.1 mmol/L" on an international lab report reflects the same healthy range.

This calculator removes that friction by converting instantly and showing both units side by side, so you always have the figure in the format you're comfortable interpreting, useful whether you're traveling, working with an international healthcare provider, or reading research published in a different unit convention.

Who Should Use This Calculator?

  • Patients receiving lab results from a country that reports in mmol/L, such as the UK, Canada, or much of continental Europe.
  • People comparing cholesterol trends across lab reports issued in different units over time.
  • Healthcare students and professionals cross-referencing international clinical literature or guidelines.
  • Anyone using the LDL Calculator or VLDL Calculator, both of which expect mg/dL inputs and may need a quick conversion first.

This calculator provides a mathematical unit conversion only. It does not interpret whether a cholesterol level is healthy, that assessment should come from a qualified healthcare provider reviewing your full lipid panel.

What Insights Does the Cholesterol Units Converter Give You?

  • Value in mg/dL, the primary result, your entered value expressed in milligrams per deciliter.
  • Value in mmol/L, the same value expressed in millimoles per liter, calculated using the correct factor for cholesterol or triglycerides.

Because both figures are shown together, you can immediately see the equivalent value in either unit without needing to remember or look up the conversion factor yourself.

How to use this Cholesterol Units calculator

  1. Enter the Lipid Value exactly as it appears on your lab report or reference source.
  2. Select Value Is In to indicate whether that number is currently in mg/dL or mmol/L.
  3. Choose the Lipid Type, cholesterol (total, LDL, or HDL) or triglycerides, since each uses a different conversion factor.
  4. Review the Value in mg/dL and Value in mmol/L results shown together.
  5. Use the converted mg/dL value directly in the LDL Calculator or VLDL Calculator if needed.
Show formula & methodology ↓Show less ↑

Formula & Methodology

Cholesterol: mg/dL = mmol/L × 38.67, and mmol/L = mg/dL ÷ 38.67

Triglycerides: mg/dL = mmol/L × 88.57, and mmol/L = mg/dL ÷ 88.57

These are the standard molar-mass-based conversion factors used across clinical chemistry to translate lipid panel values between the two unit systems.

Worked example: a total cholesterol reading of 200 mg/dL converts to 200 ÷ 38.67 = 5.17 mmol/L. Conversely, a triglyceride reading of 1.7 mmol/L converts to 1.7 × 88.57 = 150.6 mg/dL.

Frequently Asked Questions

Why do the US and other countries use different cholesterol units?
The United States reports cholesterol in milligrams per deciliter (mg/dL), while most of Europe, Canada, and many other countries report it in millimoles per liter (mmol/L). The difference is purely a reporting convention rooted in each country's laboratory standards, the underlying cholesterol level in your blood is exactly the same either way.
What is the conversion factor between mg/dL and mmol/L for cholesterol?
For total, LDL, and HDL cholesterol, 1 mmol/L equals 38.67 mg/dL, so multiplying a mmol/L value by 38.67 gives mg/dL, and dividing a mg/dL value by 38.67 gives mmol/L. This calculator applies that exact factor automatically in whichever direction you need.
Does the same conversion factor apply to triglycerides?
Triglycerides use a different molar mass, so the conversion factor is 88.57 rather than 38.67. Selecting Triglycerides as the lipid type in this calculator switches to the correct factor automatically.
What is a normal total cholesterol level in mg/dL and mmol/L?
A desirable total cholesterol is generally considered to be below 200 mg/dL, which is roughly below 5.2 mmol/L. Borderline-high typically falls between 200-239 mg/dL (about 5.2-6.2 mmol/L), and high is 240 mg/dL (about 6.2 mmol/L) or above, though your healthcare provider's reference ranges take priority.
Can I use this converter for LDL and HDL values too?
The same 38.67 conversion factor applies to total cholesterol, LDL cholesterol, and HDL cholesterol alike, since they share the same molecular basis. Simply enter the LDL or HDL number from your lab report and select the cholesterol lipid type.
Why might my lab report show a slightly different mmol/L value than this calculator?
Small rounding differences can occur because some labs round mmol/L results to one decimal place while others use two. This calculator rounds mg/dL to one decimal and mmol/L to two decimals, which may cause tiny discrepancies of a few hundredths compared to a rounded lab printout.
How accurate is this conversion for clinical decisions?
The conversion itself is mathematically exact and uses the same factors used in clinical chemistry, so it is accurate for translating a value from one unit to another. However, interpreting whether a given level is healthy still depends on your full lipid panel and personal risk factors, which this converter does not assess.
Is there a difference between converting fasting and non-fasting cholesterol values?
No, the mg/dL to mmol/L conversion factor is the same regardless of whether the original blood draw was fasting or non-fasting. Fasting status affects how triglycerides and LDL are measured or calculated on the original lab report, not the unit conversion itself.
How does this converter relate to the LDL and VLDL calculators?
If your lab report already lists LDL or VLDL in mmol/L, you can convert it to mg/dL here before using the [LDL Calculator](/ldl-calculator/) or [VLDL Calculator](/vldl-calculator/), both of which expect mg/dL inputs based on the Friedewald equation. This keeps all your lipid values in a consistent unit for further calculations.
What should I do if my result looks unusually high or low?
Double-check that you selected the correct starting unit and lipid type, since choosing the wrong one can produce a result that is off by a large factor. If the value still looks unexpected after confirming your inputs, compare it against your original lab report and consult your healthcare provider.
Can this calculator convert cholesterol ratios as well?
No, cholesterol ratios, such as total cholesterol to HDL, are unitless numbers and do not need unit conversion since the units cancel out. For ratio interpretation, use the dedicated [Cholesterol Ratio Calculator](/cholesterol-ratio-calculator/) instead.
Also known as
mmol/L to mg/dL cholesterol calculatorcholesterol unit conversionlipid panel unit convertertriglycerides mmol to mg/dLcholesterol mg/dl mmol/l converter