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Total Body Water Calculator
Estimate Total Body Water and fluid compartments
Clinical Guidelines: Total Body Water (TBW) is estimated using body weight and demographic coefficients. Approximately 2/3 of TBW is intracellular fluid (ICF) and 1/3 is extracellular fluid (ECF). Enter patient weight and profile below.
Patient Parameters Input
Calculation Results
⚠️ Not medical advice. For clinical physiology, nephrology, and medical reference only. Fluid balance management, resuscitation, and hydration protocols must be supervised strictly by an attending physician or nephrologist.