This mean arterial pressure calculator finds MAP — the average pressure in your arteries during one heartbeat — from your systolic and diastolic readings. Enter both above.
Formula
MAP = Diastolic + (Systolic − Diastolic) ÷ 3
Example
120/80 mmHg: MAP = 80 + (120 − 80) ÷ 3 = 93 mmHg.
Typical range
A MAP of about 70-100 mmHg is generally considered adequate to perfuse the organs, but interpretation is for a clinician.
Important
This tool is for general educational purposes only and is not medical advice, diagnosis, or treatment. It does not replace evaluation by a qualified healthcare professional — consult one for any health decision. Last updated: August 2026.
Frequently Asked Questions
How do I calculate mean arterial pressure?
Add the diastolic pressure to one third of the difference between systolic and diastolic: MAP = DBP + (SBP – DBP)/3.
What is a normal MAP?
Roughly 70 to 100 mmHg, but the right value depends on the individual and should be interpreted by a clinician.
Why does MAP matter?
It reflects the average pressure driving blood to the organs, which matters more than a single peak reading in some settings.