Calculate mean arterial pressure and pulse pressure from systolic and diastolic blood pressure, with an optional heart-rate-adjusted estimate.
About this tool
MAP and pulse pressure from systolic and diastolic blood pressure.
How to use Mean Arterial Pressure Calculator
- Enter systolic and diastolic blood pressure.
- Optionally add the heart rate.
- Read the MAP and pulse pressure.
Worked example
A blood pressure of 120/80 mmHg gives a MAP of 93 mmHg and a pulse pressure of 40 mmHg.
What MAP is too low?
Below about 65 mmHg organs may not be perfused well; 65 mmHg is the usual target in septic shock.
Why is MAP closer to diastolic pressure?
The heart spends about two thirds of each beat in diastole, so the average pressure sits nearer the diastolic value.
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