💧
Maintenance Fluids Calculator
Calculate IV maintenance fluid rates using the Holliday-Segar 4-2-1 rule
Clinical Guidelines: The Holliday-Segar method (4-2-1 rule) calculates basal maintenance fluid requirements based on body weight: 4 mL/kg/hr for the first 10 kg, 2 mL/kg/hr for the next 10 kg, and 1 mL/kg/hr for each kg above 20 kg. Enter patient weight below.
Patient Parameters Input
Calculation Results
⚠️ Not medical advice. For clinical practice, nursing, and reference only. Intravenous fluid prescriptions, electrolyte balancing, and patient hydration status must be supervised strictly by a qualified physician.