How to use the cardiac output calculator
Compute cardiac output from heart rate and stroke volume. Enter heart rate, stroke volume in the fields above; the cardiac output is computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- hr — Heart rate (bpm)
- sv — Stroke volume (mL)
Worked example
With heart rate = 70 bpm, stroke volume = 70 mL, the calculator gives cardiac output ≈ 4.9 L/min.
Frequently asked questions
What is the formula for the cardiac output calculation?
Cardiac output (L/min) = hr × sv / 1000. Here hr is heart rate (bpm), sv is stroke volume (mL).
What inputs do I need for the cardiac output calculator?
You need heart rate in bpm, stroke volume in mL. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.