Stroke Volume Calculator

Calculate stroke volume, SVI, and ejection fraction for cardiovascular assessment

Input Parameters

mL
mL

Body Surface Area (BSA)

kg
cm

Your Results

How to Use the Stroke Volume Calculator

1

Choose Calculation Method

Select EDV/ESV method if you have ventricular volumes, or CO/HR method if you have cardiac output and heart rate

2

Enter Measurements

Input your cardiac measurements. For EDV/ESV method: enter end-diastolic and end-systolic volumes. For CO/HR method: enter cardiac output and heart rate

3

Add Body Measurements

Enter weight (kg) and height (cm) to calculate BSA and stroke volume index for more accurate assessment

4

Review Results

Analyze calculated stroke volume, SVI, ejection fraction (if applicable), and clinical interpretations

Stroke Volume Assessment Tips

  • Normal stroke volume is 60-100 mL per beat in adults at rest

  • Stroke volume index (SVI) normalizes for body size: normal range 35-65 mL/m²

  • Ejection fraction normal range is 50-70% (only available with EDV/ESV method)

  • SV = EDV - ESV (from ventricular volumes)

  • SV = (CO / HR) × 1000 (from cardiac output and heart rate)

  • BSA is calculated using Mosteller formula: √[(height × weight) / 3600]

  • Athletes may have higher stroke volumes due to cardiac adaptation

  • Low stroke volume may indicate heart failure, hypovolemia, or reduced contractility

  • Monitor trends over time rather than relying on single measurements

Frequently Asked Questions