Cardiac Output Calculator
A stroke volume of 70 mL at 72 beats per minute gives a cardiac output of 5.04 L/min, a cardiac index of about 2.8 L/min/m².
5.04 L/min
Full answer, then cut to fewer decimals (not rounded):
- 5.04 L/min
- 5.0 L/min
- Body surface area (Mosteller) √(h·w/3600)
- 1.818118686 m²
- Cardiac index CO/BSA
- 2.772096255 L/min/m²
- Note
- A unit calculation for study and checking; clinical values come from measured data and clinicians.
Step-by-step solution
- CO = SV × HR = 70 mL × 72 /min = 5040 mL/min = 5.04 L/min
- BSA = √(170 × 70 ÷ 3600) = 1.818118686 m²; CI = 2.772096255 L/min/m²
Cardiac Output Formula
CO = SV × HR, CO = VO₂ / (CaO₂ − CvO₂)
cardiac index CI = CO / BSA; BSA (Mosteller) = √(height cm × weight kg / 3600)
Worked Example
A stroke volume of 70 mL at 72 beats per minute (170 cm, 70 kg):
- CO = SV × HR = 70 mL × 72 /min = 5040 mL/min = 5.04 L/min
- BSA = √(170 × 70 ÷ 3600) = 1.818118686 m²; CI = 2.772096255 L/min/m²
Cardiac index CO/BSA: 2.772096255 L/min/m² · Note: A unit calculation for study and checking; clinical values come from measured data and clinicians.
GATE tip
Other GATE BM methods use the same mass balance: indicator dilution gives CO = injected amount ÷ ∫c(t) dt, and thermodilution uses heat in place of dye.
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Frequently asked questions
What is the Fick principle?
Oxygen taken up by the lungs equals blood flow times the oxygen extracted: CO = VO₂/(CaO₂ − CvO₂). Contents are per decilitre, so multiply the difference by 10 for per litre.
Is this a clinical tool?
No: it applies the textbook formulas for study and checking. Clinical decisions use measured values and clinicians.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Cardiac Output Calculator. Retrieved October 25, 2026, from https://scientificconverters.com/calculators/cardiac-output-calculator/
IEEE
Scientific Converters, "Cardiac Output Calculator," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/calculators/cardiac-output-calculator/