Free Water Deficit Calculator Sponsored Advertising placement Free Water Deficit Clinical Decision Tool Estimates free water deficit in hypernatraemia from body weight, sodium and total body water fraction. Body weight (kg) Serum sodium (mmol/L) Estimated total body water fraction Select Adult male (0.6) Adult female or older male (0.5) Older female (0.45) Calculate Free Water Deficit Clear Calculator ☆ Log in to save Save this calculator to your MDPDA account. + Add to Toolkit Log in to save incomplete calculator progress and return later. Log in to save progress Clinical Decision Support Only MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress. Read our Clinical Disclaimer Sponsored Advertising placement
