Blood test converter: mmol/L to mg/dL, HbA1c % to mmol/mol

Type a result with what was measured, such as 5.5 mmol/L glucose or 6.5 % HbA1c, or choose the substance and type in any field below. This is not medical advice.

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Convert

Amount and unit

For example 5.5 mmol/L glucose, 200 mg/dL cholesterol, 6.5% HbA1c, 1.1 mg/dL creatinine, 30 ng/mL vitamin D.

Answer

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Every unit of a family, together. Choose a family to start from its example; type in any field and the rest follow, and the line above with them. The ring beside a unit makes it the answer.

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Factors and sources

Glucose, cholesterol, triglycerides: mg/dL = mmol/L × 18.016 (glucose) and × 38.67 (cholesterol: total, HDL or LDL), the molar mass over 10 (180.16 and 386.7 g/mol); × 88.57 for triglycerides, the factor in common use (1 / 0.01129), counting them as triolein (885.4 g/mol).AMA Manual of Style (11th edition) units converter; molar masses from standard atomic weights.
Urea and urea nitrogen (BUN): Two different results. European laboratories report urea itself: mmol/L = mg/dL × 10 / 60.06 (its molar mass, 60.06 g/mol), so 30 mg/dL of urea is 5.0 mmol/L. US laboratories report the urea nitrogen, BUN: mmol/L of urea = mg/dL of BUN × 0.357, so 30 mg/dL of BUN is 10.7 mmol/L. Type urea for the first and BUN for the second.KDIGO 2012 Clinical Practice Guideline for CKD (urea 0.167, BUN 0.357).
Creatinine, uric acid, calcium, vitamin D: µmol/L = mg/dL × 88.4 (creatinine) and × 59.485 (uric acid); mmol/L = mg/dL × 0.2495 (calcium); nmol/L = ng/mL × 2.496 (25-hydroxyvitamin D3).KDIGO 2012 Clinical Practice Guideline for CKD; KDIGO 2017 CKD-MBD guideline update.
HbA1c: % = 0.09148 × mmol/mol + 2.152 (the NGSP master equation), reported as a whole number of mmol/mol and % to one decimal.NGSP, ngsp.org; consensus statement, Diabetes Care 33(8), 2010.
Without a substance: mg/dL, g/L, mg/L and ng/mL are all masses in a volume: they convert among themselves without knowing what was measured (1 g/L = 100 mg/dL).
Rounding: Results are rounded the way a laboratory reports them, since the factors themselves are rounded, and to 4 significant digits in a unit a laboratory does not report for that substance. This is not medical advice: check against your own laboratory’s report.Sources read on 10 October 2026.

Common values

result	converted
4.0 mmol/L glucose	72 mg/dL
5.5 mmol/L glucose	99 mg/dL
7.0 mmol/L glucose	126 mg/dL
11.1 mmol/L glucose	200 mg/dL
5.0 mmol/L cholesterol	193 mg/dL
1.7 mmol/L triglycerides	151 mg/dL
6.0 % HbA1c	42 mmol/mol
6.5 % HbA1c	48 mmol/mol
7.0 % HbA1c	53 mmol/mol

Rounded as a laboratory reports them.