Cardiac Output Calculator
Calculate cardiac output from heart rate and stroke volume.
Cardiac Output measurements
Enter your values, then calculate.
Result
How to calculate cardiac output
Cardiac output is the volume of blood the heart pumps per minute, a fundamental measure of cardiovascular function.
How the calculation works
Cardiac output = Heart rate × Stroke volume, converted from mL to liters by dividing by 1000.
Example
70 beats/min × 70 mL/beat: 70×70÷1000 = 4.9 L/min.
Frequently asked questions
How is Result calculated?
Result = [Heart rate] × [Stroke volume] ÷ 1000.
Is the Cardiac Output Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Cardiac Output Calculator
Cardiac output = Heart rate × Stroke volume, converted from mL to liters by dividing by 1000.
Let's understand your cardiac output result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Cardiac Output
- Normal resting cardiac output for an adult is commonly cited around 4-8 L/min, though this varies with body size, fitness, and activity level.
- Cardiac output rises significantly during exercise, primarily through increased heart rate.
Common Cardiac Output Mistakes to Avoid
- Forgetting to convert stroke volume from mL to liters, which would produce a result 1000x too large.
When to Use This Calculator
Cardiac output is the volume of blood the heart pumps per minute, a fundamental measure of cardiovascular function.