Mean Arterial Pressure (MAP) Calculator

Calculate MAP from systolic and diastolic BP

Formula

MAP = DBP + (SBP - DBP)/3 = (2×DBP + SBP)/3. For HR >100: MAP ≈ DBP + 0.4×(SBP-DBP).

MAP represents the average pressure driving organ perfusion. The 1/3 factor accounts for the longer diastolic phase. At high heart rates, diastole shortens, increasing the systolic contribution.

How to Calculate Manually

1
Enter systolic blood pressure
2
Enter diastolic blood pressure
3
Optionally enter heart rate for adjusted calculation
4
Calculator shows MAP and perfusion status

Reference Table

SBP/DBP	Pulse Pressure	MAP	Perfusion
90/60	30	70	Borderline
100/70	30	80	Normal
120/80	40	93	Normal
140/90	50	107	Elevated
80/50	30	60	Inadequate
70/40	30	50	Shock

MAP Calculator: Mean Arterial Pressure for Perfusion Assessment

Mean Arterial Pressure (MAP) is a critical hemodynamic parameter representing the average arterial pressure during a single cardiac cycle. Unlike systolic or diastolic pressure alone, MAP reflects the perfusion pressure that drives blood flow to vital organs including the brain, heart, and kidneys...

Frequently Asked Questions

What is MAP? Mean Arterial Pressure is the average arterial pressure during one cardiac cycle. It represents the perfusion pressure driving blood flow to organs.: Mean Arterial Pressure is the average arterial pressure during one cardiac cycle. It represents the perfusion pressure driving blood flow to organs.
What's a normal MAP? Normal MAP: 70-100 mmHg. MAP <65 mmHg indicates inadequate perfusion (shock threshold). MAP >100 may indicate hypertension.: Normal MAP: 70-100 mmHg. MAP <65 mmHg indicates inadequate perfusion (shock threshold). MAP >100 may indicate hypertension.
How is MAP calculated? MAP = DBP + (SBP - DBP)/3 = (2×DBP + SBP)/3. At high heart rates, the diastolic portion is shorter, so some use MAP = DBP + 0.4×(SBP-DBP).: MAP = DBP + (SBP - DBP)/3 = (2×DBP + SBP)/3. At high heart rates, the diastolic portion is shorter, so some use MAP = DBP + 0.4×(SBP-DBP).

Calculator

Formula

Formula

How to Calculate Manually

Reference Table

MAP Calculator: Mean Arterial Pressure for Perfusion Assessment

Frequently Asked Questions

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