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Phosphorus (Phosphate) Unit Converter
Phosphorus (measured as inorganic phosphate) is a vital mineral for bone health, energy production (ATP), and cell signaling. It works closely with calcium and is regulated by the kidneys and parathyroid glands.
Clinically, serum phosphorus levels are monitored in chronic kidney disease (CKD), bone disorders, and nutritional assessments. This converter facilitates switching between the standard US mass unit (mg/dL) and the international SI molar unit (mmol/L).
Mass Units
StandardMilligrams per deciliter (US Standard).
SI / Molar Units
Clinical Context
Reference Range (Adult): Typically 2.5 – 4.5 mg/dL (0.81 – 1.45 mmol/L). Children generally have higher levels due to active bone growth.
Hyperphosphatemia: High levels are common in advanced kidney failure and can lead to vascular calcification.
Hypophosphatemia: Low levels may occur in refeeding syndrome, Vitamin D deficiency, or hyperparathyroidism.
Conversion Logic:
Atomic Weight of Phosphorus: ~30.97 g/mol.
1 mg/dL ≈ 0.3229 mmol/L.
1 mmol/L ≈ 3.097 mg/dL.
Clinical References
How to Use This Converter
Follow these steps to normalize Phosphorus values.
Enter Values
Input your laboratory results into the corresponding unit field (e.g., mg/dL).
Automatic Conversion
The calculator converts between mass units and the SI molar unit (mmol/L).
Reset
Use the Clear button to reset all fields.
Frequently Asked Questions
In lab reports, “Phosphorus” usually refers to inorganic phosphate, but the calculation is often based on the atomic weight of elemental Phosphorus (31 Da).
Healthy kidneys excrete excess phosphorus. When they fail, phosphorus builds up in the blood, which can pull calcium out of bones.