Bicarbonate Deficit Calculator (Serum HCO3-)

Clinical context

This calculator estimates bicarbonate deficit using target HCO3− 24 mmol/L: Bicarbonate deficit (mmol) = k × body weight (kg) × (24 − current HCO3− [mmol/L]) (k in this tool: 0.4 adults, 0.3 children). Use as an initial estimate only. Actual bicarbonate need depends on cause of acidosis, ventilation (PaCO2), ongoing losses, and serial blood-gas reassessment. Route and infusion rate (including whether central access is required) must follow local protocol and solution concentration.