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Laboratory Medicine · Internal Medicine

Phosphate mg/dL to mmol/L calculator

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

Clinical inputs

mg/dL

Allowed range: 0.001–99999 mg/dL

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Clinical inputs

  • Phosphate (mg/dL)Accepted range: 0.001 to 99999

Primary source

Labcorp SI Unit Conversion Table (Conventional to SI / SI to Conventional columns). Phosphorus, serum (inorganic phosphate reported as phosphorus): mg/dL × 0.323 = mmol/L; mmol/L × 3.10 = mg/dL (phosphorus atomic mass 30.97 g/mol). (2026)

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