How this calculator works
A mass concentration depends on what a mole represents. This page uses published clinical conversion factors for blood-test analytes and exact unit scaling; it retains the rounding of those factors. Custom mode uses the supplied molar mass directly. The displayed effective mass for a clinical preset represents its conversion convention and need not be a precise molecular mass. BUN is nitrogen mass corresponding to urea molarity. Triglycerides use a clinical average, and hemoglobin uses the single-unit 0.6206 mmol/L per g/dL convention. Bicarbonate is the ion, not sodium bicarbonate. No clinical reference interval or diagnostic cut-off is applied. The result is an estimate for information only and is not medical advice.
Formula
Custom conversion: mg/dL = mmol/L x M(g/mol) / 10; mmol/L = 10 x mg/dL / M. From paired positive concentrations, M = 10 x mg/dL / mmol/L. Clinical presets use the cited factor instead of an inferred molecular mass.
Worked example
Using a custom mass of 180 g/mol, 5 mmol/L converts to 90 mg/dL. With the clinical cholesterol factor 38.67, 5 mmol/L gives 193.35 mg/dL. Hemoglobin 15000 mg/dL (15 g/dL) gives 9.309 mmol/L under the selected convention.
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Frequently asked questions
Is there a universal conversion factor?
No. Glucose, cholesterol, ions and other analytes have different molar masses or reporting conventions.
Is hemoglobin normally reported in mg/dL?
Usually it is reported in g/dL or g/L. This page keeps mg/dL for the requested conversion, so 15 g/dL must be entered as 15000 mg/dL.
Can BUN use the whole urea molar mass?
No. BUN reports nitrogen mass. Choose the BUN convention rather than the mass of an entire urea molecule.