Basic calculations
Lab unit conversion — mg/dL ↔ µmol/L and mmol/L
Converts common laboratory values between conventional (US) units and SI units in either direction. Labs are grouped as lipids (cholesterol, LDL-C, HDL-C, triglycerides, apoB, Lp(a)), diabetes (glucose, HbA1c NGSP % ↔ IFCC mmol/mol), renal and electrolytes (creatinine, BUN to urea, uric acid, calcium, phosphate, magnesium, uACR), liver (bilirubin, albumin, ammonia), haematology and iron, and cardiac and other markers (BNP, NT-proBNP, troponin, lactate, digoxin, free T4).
Upload a report, lab sheet or echo picture to fill this calculator automatically.
Type in either box: the other unit fills in. Conventional (US) units on the left, SI units on the right.
Lipids
mg/dL ↔ mmol/L
ESC goals: 55 mg/dL = 1.4 mmol/L, 70 = 1.8, 100 = 2.6, 116 = 3.0
150 mg/dL = 1.7 mmol/L; 500 mg/dL = 5.6 mmol/L
Approximate only: the ratio depends on apo(a) isoform size. 50 mg/dL ≈ 105 nmol/L
Diabetes
Fasting 126 mg/dL = 7.0 mmol/L; 200 mg/dL = 11.1 mmol/L
IFCC = (NGSP − 2.15) × 10.929. 6.5% = 48 mmol/mol; 7.0% = 53 mmol/mol
Renal & electrolytes
Blood urea nitrogen (mg/dL) to urea (mmol/L)
KDIGO A2 30 mg/g = 3 mg/mmol; A3 300 mg/g = 30 mg/mmol
Liver
Haematology & iron
Cardiac & other
pg/mL equals ng/L
pg/mL equals ng/L
hs-cTn is reported in ng/L (= pg/mL)
References
- Young DS. Implementation of SI units for clinical laboratory data: style specifications and conversion tables. Ann Intern Med 1987;106:114-129.
- Hoelzel W, et al. IFCC reference system for measurement of hemoglobin A1c in human blood and the national standardization schemes in the United States, Japan, and Sweden: a method-comparison study. Clin Chem 2004;50:166-174.
- Kronenberg F, et al. Lipoprotein(a) in atherosclerotic cardiovascular disease and aortic stenosis: a European Atherosclerosis Society consensus statement. Eur Heart J 2022;43:3925-3946.
More in Basic calculations