What is the difference between mmol/L and mg/dL?

mmol/L (millimoles per liter) measures molar concentration — the number of molecules per liter of solution. This is the SI standard used in most countries worldwide. mg/dL (milligrams per deciliter) measures mass concentration — the weight of substance per deciliter. This unit is primarily used in the United States.

Why does the conversion factor differ between substances?

The conversion factor is derived from the molecular weight of each substance. Since different molecules have different masses, converting between molar concentration (mmol/L) and mass concentration (mg/dL) requires substance-specific factors. The formula is: mg/dL = mmol/L × (molecular weight ÷ 10).

Which countries use mmol/L vs mg/dL?

mmol/L is used in most countries following the SI system, including the UK, Canada, Australia, New Zealand, and most of Europe, Asia, and Africa. mg/dL is primarily used in the United States.

How do I convert mmol/L to mg/dL manually?

Multiply the mmol/L value by the appropriate conversion factor: 18.018 for blood glucose, 38.67 for cholesterol, or 88.57 for triglycerides. Example: 5.5 mmol/L blood glucose × 18.018 = 99.1 mg/dL.

Are these conversion factors exact?

Yes, the conversion factors are based on precise molecular weights and are considered accurate for clinical purposes. The factor 18.018 for blood glucose is derived from the exact molecular weight of glucose (180.156 g/mol).

Can I use this converter for medical decisions?

This converter provides accurate unit conversions based on established molecular weights and clinical standards. However, it is intended for reference and educational purposes only. Medical decisions should always be made in consultation with qualified healthcare professionals.

Triglycerides mg/dL to mmol/L: Reverse Conversion Chart

Convert triglycerides from mg/dL to mmol/L with quick lookup tables for 150, 200, 500 mg/dL and other common triglyceride values.

Quick Answer

To convert triglycerides from mg/dL to mmol/L, divide by 88.57.

mg/dL	mmol/L	Common Context
100	1.1	Normal range
150	1.7	Borderline high threshold
200	2.3	High threshold
500	5.6-5.7	Very high threshold

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150 mg/dL = 8.3 mmol/L

Borderline triglycerides threshold

Triglycerides Converter

Substance

Value

From: mmol/L

Result

99.1mg/dL

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This is a reverse lookup page. For the full explanation of triglycerides, fasting context, categories, and mmol/L to mg/dL conversion, use the main Triglycerides Conversion Guide.

Formula

Direction	Formula
mg/dL to mmol/L	mg/dL ÷ 88.57
mmol/L to mg/dL	mmol/L × 88.57

This formula is for triglycerides only. Total cholesterol, LDL, and HDL use the cholesterol factor of 38.67.

Common Triglycerides mg/dL to mmol/L

Choose table format

mg/dL	mmol/L	Rounded mmol/L
50	0.56	0.6
75	0.85	0.8
100	1.13	1.1
125	1.41	1.4
150	1.69	1.7
175	1.98	2.0
200	2.26	2.3
250	2.82	2.8
300	3.39	3.4
400	4.52	4.5
500	5.65	5.6
600	6.77	6.8

Triglycerides Threshold Lookup

Choose table format

Threshold	mg/dL	mmol/L	Category Boundary
Normal upper reference	150	1.7	Normal to borderline high
High threshold	200	2.3	Borderline high to high
Very high threshold	500	5.6-5.7	High to very high

The exact conversion for 500 mg/dL is 5.65 mmol/L. Some references round this to 5.6 mmol/L, while others show 5.7 mmol/L.

Which Lipid Panel Formula Should You Use?

Lab Marker	Correct Factor	mg/dL to mmol/L Formula
Triglycerides	88.57	mg/dL ÷ 88.57
Total Cholesterol	38.67	mg/dL ÷ 38.67
LDL Cholesterol	38.67	mg/dL ÷ 38.67
HDL Cholesterol	38.67	mg/dL ÷ 38.67

The most common conversion error is using the cholesterol factor for triglycerides. Always match the formula to the lab marker name.

Common Reverse Lookups

150 mg/dL triglycerides

150 mg/dL equals 1.69 mmol/L, usually rounded to 1.7 mmol/L.

200 mg/dL triglycerides

200 mg/dL equals 2.26 mmol/L, usually rounded to 2.3 mmol/L.

500 mg/dL triglycerides

500 mg/dL equals 5.65 mmol/L. Depending on rounding style, this may be displayed as 5.6 mmol/L or 5.7 mmol/L.

Same mg/dL, Different Substance

Value	Lab Marker	Correct Formula	Result
150 mg/dL	Triglycerides	150 ÷ 88.57	1.7 mmol/L
150 mg/dL	Total Cholesterol	150 ÷ 38.67	3.9 mmol/L
150 mg/dL	LDL Cholesterol	150 ÷ 38.67	3.9 mmol/L

The number is the same, but the unit conversion is different because triglycerides and cholesterol markers use different conversion factors.

FAQ

What is the triglycerides mg/dL to mmol/L formula?

Use mmol/L = mg/dL ÷ 88.57.

What is 150 mg/dL triglycerides in mmol/L?

150 mg/dL ÷ 88.57 = 1.69 mmol/L, usually rounded to 1.7 mmol/L.

What is 200 mg/dL triglycerides in mmol/L?

200 mg/dL ÷ 88.57 = 2.26 mmol/L, usually rounded to 2.3 mmol/L.

What is 500 mg/dL triglycerides in mmol/L?

500 mg/dL ÷ 88.57 = 5.65 mmol/L. It may be rounded as 5.6 or 5.7 mmol/L.

Can I use the cholesterol formula for triglycerides?

No. Triglycerides use 88.57. Cholesterol, LDL, and HDL use 38.67.

Does a triglyceride value diagnose a condition?

No. This page only converts units and shows common reference thresholds. Diagnosis and treatment decisions require clinical evaluation.

Related Resources

Triglycerides mmol/L to mg/dL - Main triglycerides conversion guide
Cholesterol mg/dL to mmol/L - Reverse cholesterol conversion chart
Cholesterol mmol/L to mg/dL - Complete lipid panel guide
HDL Cholesterol mmol/L to mg/dL - HDL conversion and ranges

References

Mayo Clinic. Cholesterol test
American Heart Association. HDL, LDL Cholesterol and Triglycerides
Centers for Disease Control and Prevention. About Cholesterol
National Heart, Lung, and Blood Institute. Blood Cholesterol

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Medical Disclaimer: This page is for unit conversion and general education only. Triglyceride values should be interpreted by a healthcare professional in the context of your complete lipid panel and health history.