Laboratory Medicine · Internal Medicine

Magnesium mmol/L to mg/dL calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Magnesium (mmol/L)

mg/dL

Allowed range: 0–243070 mg/dL

Result

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Clinical inputs

Magnesium (mmol/L)Accepted range: 0.001 to 99999

Primary source

Labcorp SI Unit Conversion Table (Conventional to SI / SI to Conventional columns). Magnesium, serum: mmol/L × 2.43 = mg/dL; this calculator divides by 0.4114 (= × 2.4307), from the atomic mass of magnesium (24.305 g/mol). (2026)

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