Health & Medical Tools

Clinical formulas, dosing, and physiology calculators.

• BMI Calculator

  Calculate Body Mass Index (BMI) in metric (kg/cm) or imperial (lbs/in). Instantly shows your BMI value and weight category — underweight, normal, overweight, or obese.

• Body Surface Area (BSA)

  Calculate body surface area using the Mosteller and DuBois formulas. Used clinically for chemotherapy dosing, burn assessment, and cardiac output calculations.

• Ideal Body Weight

  Calculate ideal body weight using the Devine, Robinson, and Hamwi formulas in metric and imperial units. Used in clinical dosing and nutritional assessment.

• Target Heart Rate Zones

  Calculate heart rate training zones using the Karvonen formula from your age and resting heart rate. Shows 5 zones from light aerobic to maximum effort for exercise planning.

• eGFR Calculator

  Calculate estimated glomerular filtration rate (eGFR) using the CKD-EPI 2021 equation. Used to stage chronic kidney disease from serum creatinine, age, and sex.

• Creatinine Clearance

  Calculate creatinine clearance using the Cockcroft-Gault equation with optional adjusted body weight. Widely used for drug dose adjustments in renal impairment.

• Pregnancy Due Date

  Calculate estimated due date (EDD) and current gestational age using Naegele's rule from last menstrual period. Shows trimester and key milestone dates.

• Pediatric Dose (mg/kg)

  Convert weight-based mg/kg doses to total dose in mg or mL. Includes maximum dose safety checks — useful for nurses, pharmacists, and physicians calculating pediatric drug doses.

• IV Drip Rate

  Calculate IV drip rate in drops per minute and flow rate in mL/hr for any infusion. Enter volume, time, and drop factor — essential for nursing and pharmacy calculations.

• Anion Gap Calculator

  Calculate the anion gap from sodium, chloride, and bicarbonate, with optional albumin correction. Used to diagnose and classify metabolic acidosis in clinical settings.

• CHA₂DS₂-VASc Score

  Calculate the CHA₂DS₂-VASc stroke risk score for patients with atrial fibrillation. Shows score, annual stroke risk percentage, and anticoagulation threshold guidance.

• MELD Score

  Calculate the Model for End-Stage Liver Disease (MELD) score from bilirubin, creatinine, and INR. Used to prioritize liver transplant candidates by disease severity and 90-day mortality risk.

• Wells PE Score

  Calculate the Wells clinical prediction score for pulmonary embolism probability. Stratifies patients into low, intermediate, and high pre-test probability to guide imaging decisions.