Cholesterol Unit Converter

Cholesterol divides by 38.67 and triglycerides by 88.57 — different molar masses mean different divisors. The second figure uses the triglyceride factor.

Your numbers

Total cholesterol(mg/dL)

mmol/L

5.17mmol/L

Result

2.26mmol/L

Formula

mmol/L = Total cholesterol ÷ 38.67

Mixing the two units when reading a foreign lab report throws the numbers off by more than double.

What to enter

Input	Default	Accepted range
Total cholesterol (mg/dL)All the cholesterol in the blood, added up.	200	20 ~ 600

Step by step

Formulammol/L = Total cholesterol ÷ 38.67

With the default numbersmmol/L = 200 ÷ 38.67

Answermmol/L = 5.17 mmol/L

Quick reference table

Results when only Total cholesterol (mg/dL) changes and everything else stays put.

Total cholesterol (mg/dL)	mmol/L (mmol/L)	Result (mmol/L)
100	2.59	1.13
150	3.88	1.69
200	5.17	2.26
300	7.76	3.39
400	10.34	4.52

What each result means

Result	At default values
mmol/L (mmol/L)The European blood-sugar unit — mg/dL divided by 18.	5.17
Result (mmol/L)What the formula gives back — the answer this page is for.	2.26

Common mistakes

Mixing the two units when reading a foreign lab report throws the numbers off by more than double.

Glossary

Total cholesterol: All the cholesterol in the blood, added up.
mmol/L: The European blood-sugar unit — mg/dL divided by 18.
Result: What the formula gives back — the answer this page is for.

Frequently asked questions

QHow is Cholesterol Unit Converter calculated?

mmol/L = Total cholesterol ÷ 38.67 — Cholesterol divides by 38.67 and triglycerides by 88.57 — different molar masses mean different divisors. The second figure uses the triglyceride factor.

QCan you walk through an example?

With Total cholesterol 200mg/dL, the answer is mmol/L 5.17mmol/L.

QWhat do I need to enter?

Enter Total cholesterol. The result recalculates as you type, and an empty box counts as zero.

QHow much does the answer move if I change a number?

Changing only Total cholesterol (mg/dL) moves the answer to Total cholesterol (mg/dL) 100 → mmol/L (mmol/L) 2.59 and Total cholesterol (mg/dL) 400 → mmol/L (mmol/L) 10.34. The table below lays out five steps.

QHow are the numbers rounded?

Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.

QAnything to watch out for?

Mixing the two units when reading a foreign lab report throws the numbers off by more than double.

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These calculators help you understand health figures; they do not replace diagnosis or prescription. See a clinician if you have symptoms.