Why do lab values need molar mass to convert?
Conventional units (mg/dL) measure mass per volume, while SI units (mmol/L) measure moles per volume. Bridging them requires the analyte's molar mass: mmol/L = (mg/dL × 10) ÷ molar mass.
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Clinical Lab Value Converter
Convert clinical lab values between conventional (mg/dL) and SI (mmol/L) units using each analyte's molar mass, plus HbA1c percent ↔ mmol/mol.
mmol/L = (mg/dL × 10) ÷ molar mass; mg/dL = (mmol/L × molar mass) ÷ 10
Frequently asked questions
Can you show a worked example?
Glucose 100 mg/dL with molar mass 180.16 g/mol: (100 × 10) ÷ 180.16 ≈ 5.55 mmol/L — the familiar normal fasting figure.
Why is HbA1c handled differently?
HbA1c is reported as a percentage (DCCT/NGSP) or mmol/mol (IFCC), related by a linear formula rather than a molar mass: mmol/mol = (% − 2.15) × 10.929.
Which analytes are supported?
Glucose, total cholesterol, LDL, HDL, creatinine, urea/BUN (all via molar mass) and HbA1c (via the IFCC formula). LDL and HDL share cholesterol's molar mass.
Can I use this for medical decisions?
No. This is general information only, not medical advice. Reference ranges vary by laboratory and clinical context — always consult a qualified doctor or accredited practitioner before acting on any value.