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Fast Medical Calculators
Quick formulas for renal function, risk scores, ICU severity, dosing support, and common medical math.
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BMI Calculator (Body Mass Index)Calculate Body Mass Index from weight and height.Corrected Calcium CalculatorCorrect serum calcium for albumin level.Anion Gap CalculatorCalculate serum anion gap from electrolytes.Ideal Body Weight CalculatorCalculate ideal body weight using the Devine formula.Maintenance IV Fluid Rate (4-2-1 Rule)Calculate maintenance IV fluid rate using the 4-2-1 rule.Body Surface Area (BSA) CalculatorCalculate body surface area using Du Bois or Mosteller formula.IV Drip Rate CalculatorCalculate IV infusion rate in mL/hr and drops per minute.Lab Unit Converter (mg/dL ↔ mmol/L)Convert between conventional and SI lab units for common substances.Adjusted Body Weight CalculatorCalculate adjusted body weight for drug dosing in obese patients.
eGFR Calculator (CKD-EPI 2021)Estimate glomerular filtration rate using the CKD-EPI equation.Creatinine Clearance Calculator (CrCl, Cockcroft-Gault)Estimate creatinine clearance using the Cockcroft-Gault formula.Sodium Correction for HyperglycemiaCorrect sodium for elevated glucose levels.Serum Osmolality CalculatorCalculate serum osmolality and osmolar gap.Kt/V (Dialysis Adequacy)Assess hemodialysis adequacy using the Daugirdas formula.Urine Protein-Creatinine Ratio (UPCR) CalculatorEstimate 24-hour urine protein from a spot urine sample.Albumin-Corrected Anion GapCalculate albumin-corrected anion gap and delta-delta ratio.
QTc Calculator (Bazett, Fridericia)Calculate corrected QT interval with Bazett, Fridericia, Framingham, and Hodges formulas.ASCVD Risk CalculatorEstimate 10- and 30-year ASCVD risk with the AHA PREVENT equations.Mean Arterial Pressure (MAP) CalculatorCalculate mean arterial pressure from systolic and diastolic BP.CHA₂DS₂-VASc ScoreAssess stroke risk in patients with atrial fibrillation.Revised Cardiac Risk Index (RCRI)Estimate risk of major cardiac events after non-cardiac surgery.GRACE Score CalculatorEstimate in-hospital mortality risk in acute coronary syndromes.HAS-BLED Bleeding Risk CalculatorAssess bleeding risk in atrial fibrillation patients on anticoagulation.
GCS Calculator (Glasgow Coma Scale)Calculate Glasgow Coma Scale from eye, verbal, and motor responses.APACHE II CalculatorEstimate ICU mortality risk using the APACHE II scoring system.SOFA Score CalculatorAssess organ dysfunction severity using the SOFA score.SIRS CriteriaEvaluate systemic inflammatory response syndrome criteria.Burns BSA — Rule of NinesEstimate total body surface area burned using the Rule of Nines.Parkland Formula (Burns Fluid Resuscitation)Calculate fluid resuscitation for burn patients using the Parkland formula.Shock Index CalculatorCalculate shock index from heart rate and systolic blood pressure.qSOFA ScoreQuick bedside screening for sepsis risk using the qSOFA score.RASS (Richmond Agitation-Sedation Scale)Assess ICU patient sedation and agitation level using RASS.BISAP Score (Pancreatitis Severity)Predict mortality in acute pancreatitis using the BISAP score.PSI (Pneumonia Severity Index)Stratify pneumonia severity to guide disposition decisions.
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