ECG Heart Rate Calculator
Calculate heart rate from ECG using the 300, 1500, and 6-second methods with our free ECG Heart Rate Calculator. Enter R-R interval boxes for instant HR classification and clinical interpretation.
ECG Boxes to Seconds Calculator
Convert ECG boxes to seconds and calculate heart rate instantly with our free ECG Boxes to Seconds Calculator.
Duke Treadmill Score Calculator
Calculate your Duke Treadmill Score for exercise stress test risk stratification. Enter exercise duration, ST deviation, and angina index for 5-year survival prognosis and CAD risk assessment.
Karvonen Formula Calculator
Find your optimal exercise intensity with the Karvonen Formula Calculator. Enter your age, resting heart rate, and desired intensity to receive your target heart rate, heart rate reserve, and training zone classification for more effective workouts.
Cardiovascular Disease 10-year Risk
Calculate your 10-year ASCVD risk with our free CVD Risk Calculator using the ACC/AHA Pooled Cohort Equations.
CHA₂DS₂-VASc Calculator
Calculate your CHA₂DS₂-VASc score and stroke risk with our free CHA₂DS₂-VASc Calculator. Assess 8 risk factors. for atrial fibrillation patients
Cardiac Output Calculator
Calculate cardiac output using the Fick principle with our free Cardiac Output Calculator. Enter VO2, hemoglobin, and oxygen saturations for instant CO, CI, and hemodynamic classification.
Cardiac Index Calculator
Calculate Cardiac Index (CI) from cardiac output and body surface area with our free CI Calculator. Get instant classification (Normal, Low, High, Critical) with personalized clinical recommendations.
Arterial Age Calculator
Estimate your vascular age with our free Arterial Age Calculator. Enter blood pressure, lifestyle factors, and health markers to see if your arteries are older or younger than your chronological age.
Aortic Valve Area Calculator
Use our free Aortic Valve Area calculator to estimate AVA using the continuity equation. Assess aortic stenosis severity with indexed AVA, clinical recommendations, and instant results.