Calculate mean arterial pressure from blood pressure.
Mean arterial pressure for Mean Arterial Pressure weights the longer diastolic phase of the cycle, giving the number that drives perfusion to vital organs. MAP is what organs actually see, so it is the value that matters for perfusion, not the peak systolic.
Mean Arterial Pressure
MAP = diastolic + (systolic - diastolic) / 3
These are educational and reference calculations only. They are not a diagnosis, not a substitute for measurement or laboratory testing, and must not be used to start, stop, time or change any medication or treatment. Reference thresholds differ between national guidelines and do not account for your individual clinical context. Discuss any result that concerns you with a qualified healthcare professional, and seek urgent medical attention for acute symptoms rather than relying on a calculator.
MAP = diastolic + (systolic - diastolic) / 3 Mean arterial pressure for Mean Arterial Pressure weights the longer diastolic phase of the cycle, giving the number that drives perfusion to vital organs.
MAP is what organs actually see, so it is the value that matters for perfusion, not the peak systolic.
This calculator takes 3 inputs: Systolic pressure, Diastolic pressure, Pulse pressure. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.