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.