Biomarker Unit Converter — Conventional ↔ SI Units

Lab Unit Converter

Convert between conventional (US) and SI (international) units for common blood test markers. Used by labs worldwide — US labs typically report in conventional units, while most other countries use SI.

Biomarker

mg/dL

mmol/L

—

Quick Reference — All Conversions

Lipids

Total Cholesterol1 mg/dL = 0.02586 mmol/L

LDL Cholesterol1 mg/dL = 0.02586 mmol/L

HDL Cholesterol1 mg/dL = 0.02586 mmol/L

Triglycerides1 mg/dL = 0.01129 mmol/L

Metabolic

Glucose (Fasting)1 mg/dL = 0.05551 mmol/L

HbA1c1 % (NGSP) = IFCC formula mmol/mol (IFCC)

Kidney

Creatinine1 mg/dL = 88.42 µmol/L

BUN / Urea1 mg/dL = 0.3571 mmol/L

Uric Acid1 mg/dL = 59.48 µmol/L

Electrolytes

Calcium (Total)1 mg/dL = 0.2495 mmol/L

Phosphorus1 mg/dL = 0.3229 mmol/L

Magnesium1 mg/dL = 0.4114 mmol/L

Iron

Iron1 µg/dL = 0.1791 µmol/L

Ferritin1 ng/mL = 1 µg/L

TIBC1 µg/dL = 0.1791 µmol/L

Vitamins

Vitamin D (25-OH)1 ng/mL = 2.496 nmol/L

Vitamin B121 pg/mL = 0.7378 pmol/L

Folate1 ng/mL = 2.266 nmol/L

Hormones

Testosterone (Total)1 ng/dL = 0.03467 nmol/L

Estradiol (E2)1 pg/mL = 3.671 pmol/L

Cortisol1 µg/dL = 27.59 nmol/L

Progesterone1 ng/mL = 3.18 nmol/L

Thyroid

TSH1 µIU/mL = 1 mIU/L

Free T41 ng/dL = 12.87 pmol/L

Free T31 pg/mL = 1.536 pmol/L

Total T41 µg/dL = 12.87 nmol/L

Inflammatory

C-Reactive Protein1 mg/L = 0.1 mg/dL

Liver

Bilirubin (Total)1 mg/dL = 17.1 µmol/L

ALT (SGPT)1 U/L = 0.0167 µkat/L

AST (SGOT)1 U/L = 0.0167 µkat/L

Albumin1 g/dL = 10 g/L

Cardiac

Homocysteine1 µmol/L = 0.1352 mg/L

Lipoprotein(a)1 mg/dL = 2.4 nmol/L

ApoB1 mg/dL = 0.01 g/L

Tired of converting units manually?

ByoMap automatically converts and normalizes units from any lab report — upload a PDF and we handle the rest. Track 200+ biomarkers with personalized ranges across conventional and SI units.

About Lab Units

Laboratory results can be reported in different unit systems depending on your country. The United States primarily uses conventional units (mg/dL, ng/mL, µg/dL), while most other countries use the International System of Units (SI) (mmol/L, nmol/L, pmol/L). This can cause confusion when comparing results from different labs or referencing international guidelines.

Indian labs commonly use conventional units for most markers (mg/dL for lipids and glucose, g/dL for hemoglobin) but may use SI units for some tests. European and Australian labs predominantly use SI units. Middle Eastern labs vary by country and laboratory chain.

When tracking your health over time, consistency in units is important. ByoMap stores all markers in conventional units by default and provides a one-click toggle to view in SI units, so you never have to worry about unit mismatches between different lab reports.