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Compute SV = CO × 1000 / HR (mL/beat). Normal 60–100 mL; low in shock, hypovolemia, tachycardia; high in bradycardia and AR. Derived from Guyton & Hall, StatPearls, LITFL, Braunwald. Not medical advice.
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Tool usage guide
The Stroke Volume Calculator estimates stroke volume in mL per beat from cardiac output and heart rate using SV = CO × 1000 / HR. It also classifies the result as low, normal, or high based on the tool's reference ranges and is not medical advice.
Background
A medical student is reviewing a resting hemodynamic example with a cardiac output of 5 L/min and a heart rate of 72 bpm.
Problem
Calculate the volume ejected by the ventricle with each heartbeat and identify its category.
How to use
Enter CO as 5, heart rate as 72, and leave decimal places set to 2.
CO: 5 L/min; HR: 72 bpm; decimal places: 2Outcome
The calculator returns 69.44 mL/beat and classifies it as normal stroke volume.
Background
A critical care trainee is reviewing a case with cardiac output of 4 L/min and a heart rate of 110 bpm.
Problem
Determine whether the calculated stroke volume is below the tool's normal adult range.
How to use
Enter CO as 4, heart rate as 110, and use 2 decimal places.
Stroke volume is calculated as SV = CO × 1000 / HR, producing mL per beat.
You need cardiac output in L/min and heart rate in beats per minute.
The tool uses 60–100 mL per beat as the normal adult range.
Yes. You can set decimal places from 0 to 8; the default is 2.
No. It provides a calculation for reference and does not replace professional medical evaluation.
CO: 4 L/min; HR: 110 bpm; decimal places: 2Outcome
The result is 36.36 mL/beat, classified as low stroke volume.