Health

Mean Arterial Pressure (MAP) Calculator

Calculate your Mean Arterial Pressure (MAP) from systolic and diastolic blood pressure. Get an instant MAP value in mmHg plus a low, normal, or elevated category.

Mean Arterial Pressure (MAP) Calculator

Systolic Pressure (SBP, mmHg)

Diastolic Pressure (DBP, mmHg)

Method

How this calculator works

MAP = DBP + (1/3)(SBP − DBP), which is equivalent to (SBP + 2 × DBP) / 3. The diastolic value is weighted twice because the heart spends about two-thirds of each cycle in diastole.

Measure or obtain your systolic blood pressure (the higher number).
Obtain your diastolic blood pressure (the lower number).
Enter both values in mmHg into the calculator.
The tool applies MAP = (SBP + 2 × DBP) / 3 and classifies the result as low, normal, or elevated.

Disclaimer: This calculator provides estimates for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for decisions affecting your health. Results depend on the accuracy of inputs provided.

FAQ

Frequently asked questions

What is Mean Arterial Pressure?

Mean Arterial Pressure (MAP) is the average pressure in your arteries during one cardiac cycle. It reflects the perfusion pressure delivered to your organs and is considered a better indicator of organ blood flow than systolic pressure alone.

How is MAP calculated?

MAP is estimated as the diastolic pressure plus one-third of the pulse pressure: MAP = DBP + (1/3)(SBP − DBP), which simplifies to (SBP + 2 × DBP) / 3.

What is a normal MAP?

A MAP between 70 and 100 mmHg is generally considered normal for adults. Below 70 mmHg may indicate inadequate organ perfusion, while above 100 mmHg suggests elevated pressure.

Why is a MAP of 60 mmHg important?

A MAP of at least 60 mmHg is often cited as the minimum needed to adequately perfuse vital organs such as the brain, heart, and kidneys. Sustained values below this can risk organ damage.

Can I use MAP instead of regular blood pressure?

MAP is a complementary measure, not a replacement. Clinicians use it alongside systolic and diastolic readings, especially in critical care, but routine screening still relies on the standard blood pressure pair.