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MAP Calculator

Mean Arterial Pressure (MAP) Calculator

Calculate Mean Arterial Pressure to assess organ perfusion and circulatory stability. Essential tool for medical professionals and students.

100% FreeClinical FormulaOrgan Perfusion Assessment
MAP Calculator
Calculate Mean Arterial Pressure using systolic and diastolic blood pressure values

Normal range: 100 - 120 mm Hg

Normal range: 60 - 80 mm Hg

Common Blood Pressure Examples
Click on any example to automatically fill the calculator
Example

Normal blood pressure

Systolic: 120 mm Hg
Diastolic: 80 mm Hg
Example

Stage 1 hypertension

Systolic: 140 mm Hg
Diastolic: 90 mm Hg
Example

Hypotension

Systolic: 90 mm Hg
Diastolic: 60 mm Hg
Example

Stage 2 hypertension

Systolic: 160 mm Hg
Diastolic: 100 mm Hg
What is Mean Arterial Pressure?

Mean Arterial Pressure (MAP) represents the average pressure in the arteries during one cardiac cycle. It's calculated using the formula that gives more weight to diastolic pressure since the heart spends more time in diastole.

Formula: MAP=fracSystolic+2timesDiastolic3MAP = \\frac{Systolic + 2 \\times Diastolic}{3}
Physiology: Diastole lasts ~2/3 of cardiac cycle, hence the 2:1 weighting

Key Concepts:

  • Perfusion Pressure: MAP drives blood flow to vital organs
  • Cardiac Cycle: Integrates both systolic and diastolic phases
  • Clinical Target: MAP ≥ 65 mm Hg for adequate organ perfusion
  • Monitoring: Essential in critical care and anesthesia
Normal MAP Range & Interpretation

70–100 mm Hg

Normal range with adequate organ perfusion

< 65 mm Hg

Critical - inadequate perfusion, requires immediate intervention

> 100 mm Hg

Elevated - may indicate hypertension or increased cardiovascular strain

Clinical Note: Individual patient factors, comorbidities, and clinical context may require adjustment of these ranges.

MAP vs. Systolic/Diastolic Blood Pressure

Systolic BP

Peak pressure during ventricular contraction. Represents maximum arterial pressure.

MAP

Average pressure over entire cardiac cycle. Better indicator of organ perfusion.

Diastolic BP

Minimum pressure during ventricular relaxation. Sustained pressure between beats.

Key Insight: MAP integrates both systolic (peak) and diastolic (sustained) pressure, making it more representative of average tissue perfusion than either value alone.

Why Use Our MAP Calculator?

Clinical Accuracy

Uses standard MAP formula with proper validation

Educational Content

Comprehensive clinical context and interpretation

Clinical Pearls

Evidence-based recommendations and pitfalls

Free & Professional

No registration, medical-grade tool

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