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Free Water Deficit Calculator
Calculate free water deficit for hypernatremia correction
Clinical Guidelines: The free water deficit estimates the volume of pure water required to normalize serum sodium levels in hypernatremia. Formula: $\text{Deficit} = \text{TBW} \times \left(\frac{\text{Current Na}}{140} - 1\right)$. Enter patient values below.
Patient Parameters Input
Calculation Results
⚠️ Not medical advice. For nephrology, critical care, and clinical reference only. Rapid correction of hypernatremia can cause cerebral edema; free water replacement rate and fluid management must be supervised strictly by a qualified physician.