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Stroke Volume Calculator

Work out stroke volume instantly with clear inputs, formula shown and shareable results.

About Stroke Volume Calculator

Derives the volume ejected per beat from cardiac output and heart rate, and indexes it to body surface area.

Formula

Stroke volume

SV (mL) = CO (L/min) x 1000 / HR (bpm); SVI = SV / BSA

Worked example

With the default values below, Stroke Volume Calculator returns Stroke volume of 71.4. Change any input above and every figure here is recalculated in your browser.

Inputs used

Cardiac outputaccepts 0.5–20 L/min
5 L/min
Heart rateaccepts 20–220 bpm
70 bpm
Body surface areaaccepts 0.2–3 m2
1.8 m2

Results

Stroke volume
71.4 mL
Stroke volume index
39.7 mL/m2
Comparison
Within the usual adult range

Step by step

  1. 1Values used
  2. 2Stroke volume
  3. 3Stroke volume= 71.4 mL
  4. 4Stroke volume index= 39.7 mL/m2
  5. 5Comparison= Within the usual adult range

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

What is a normal stroke volume?

Roughly 60 to 100 mL per beat in a resting adult.

Does stroke volume change with training?

Endurance training typically raises stroke volume, which is why trained resting heart rates are lower for the same output.

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