100 mg/dL triglycerides to mmol/L

About triglycerides and these units

Triglycerides are the principal lipid form in which fat is transported in serum, reported on a standard lipid panel. Triglycerides appear in mg/dL on US lab reports and in mmol/L on UK, Canadian, Australian, and most European lab reports. The factor (0.01129) is smaller than for cholesterol because triglyceride molecules are heavier.

Where the 0.01129 conversion factor comes from

mg/dL is a mass-per-volume unit. mmol/L is a moles-per-volume (molar concentration) unit. To convert between them you need the molecular weight of the substance, because that determines how many moles of it fit into a given mass.

For triglycerides, the reference molecular weight is ~885 g/mol (triolein, the assumed average triglyceride). Working through the unit algebra:

• The factor is fixed by the molecular weight (~885 g/mol (triolein, the assumed average triglyceride)) together with the mass and volume prefixes of the two units, since a molar concentration counts molecules and a mass concentration weighs them.
• For triglycerides this works out to 0.01129 mmol/L per mg/dL (multiply mg/dL by 0.01129 to get mmol/L).
• The inverse (mmol/L → mg/dL) is 88.574.

Step-by-step: converting 100 mg/dL of triglycerides by hand

1. Start with the lab value: 100 mg/dL.
2. Look up the conversion factor for triglycerides: 0.01129 mmol/L per mg/dL.
3. Multiply: 100 × 0.01129 = 1.129.
4. Attach the SI unit: 1.129 mmol/L.

Inverse check: 1.129 mmol/L ÷ 0.01129 = 100 mg/dL ✓.

Companion conversions for nearby triglycerides values

If your lab reported a number close to but not exactly 100 mg/dL, the table below covers the surrounding range so you don't need to re-run the arithmetic.

A note on precision

Clinical chemistry assays for triglycerides are typically precise to two or three significant figures. The exact factor 0.01129 is itself a rounded number, and the molecular weight that produces it (~885 g/mol (triolein, the assumed average triglyceride)) is conventionally rounded. So while the calculator displays 1.129 mmol/L for 100 mg/dL, reporting more decimal places than your original measurement supports is false precision.

Common questions

What is 100 mg/dL triglycerides in mmol/L?

100 mg/dL of triglycerides equals 1.129 mmol/L. The conversion factor for triglycerides is 0.01129 (multiply mg/dL by 0.01129 to get mmol/L).

How do I convert mg/dL to mmol/L for triglycerides?

triglycerides has a conversion factor of 0.01129. Formula: 100 mg/dL × 0.01129 = 1.129 mmol/L. Inverse: 1.129 mmol/L ÷ 0.01129 = 100 mg/dL.

Why does triglycerides have a different conversion factor than other biomarkers?

Each biomarker's mg/dL ↔ mmol/L factor is set by its molecular weight, because mmol/L is a molar concentration. For triglycerides, the reference molecular weight is ~885 g/mol (triolein, the assumed average triglyceride), which gives a factor of 0.01129.

Where is mg/dL used and where is mmol/L used?

Triglycerides appear in mg/dL on US lab reports and in mmol/L on UK, Canadian, Australian, and most European lab reports. The factor (0.01129) is smaller than for cholesterol because triglyceride molecules are heavier.

How precise should I report the converted value?

Lab assays for triglycerides are typically precise to about two or three significant figures. Reporting more decimal places than your original measurement supports is false precision. For a reading of 100 mg/dL, 1.129 mmol/L is appropriate; further decimals are not.

Related conversions and reference

• Full blood test unit converter: convert any value for 50+ biomarkers in either direction.
• HbA1c ↔ average glucose converter: separate page for the HbA1c (% / mmol/mol) ↔ eAG conversion.
• Cholesterol ratio calculator: total/HDL and LDL/HDL ratios.