Fluid Electrolytes Calculators — Clinical Medicine
Guide fluid and electrolyte replacement with formula-based tools. The maintenance IV fluids calculator applies weight-based rates, the potassium and magnesium replacement tools estimate correction doses from measured deficits, and the bicarbonate deficit calculator quantifies buffer needs in metabolic acidosis. Each shows its equation and is provided for educational reference only — confirm every dose against current protocols and a qualified clinician.
All Fluid Electrolytes Calculators
Calculate sodium bicarbonate replacement needs for metabolic acidosis correction.
Calculate magnesium replacement dose from serum level and weight for hypomagnesemia.
Calculate maintenance IV fluid rate using the 4-2-1 rule based on patient weight.
Calculate potassium replacement dosing from deficit and target serum potassium level.
About Fluid Electrolytes Calculators
Guide fluid and electrolyte replacement with formula-based tools. The maintenance IV fluids calculator applies weight-based rates, the potassium and magnesium replacement tools estimate correction doses from measured deficits, and the bicarbonate deficit calculator quantifies buffer needs in metabolic acidosis. Each shows its equation and is provided for educational reference only — confirm every dose against current protocols and a qualified clinician.
Whether you need to solve a one-time problem or verify your own calculations, these free tools cover the most common fluid electrolytes scenarios. All results are computed in your browser — no data is sent to any server.
What You Can Calculate
This section includes 4tools: Bicarbonate Deficit Calculator, Magnesium Replacement Calculator, Maintenance Iv Fluids Calculator, Potassium Replacement Calculator. Each calculator is free to use with no signup required.