Mean Arterial Pressure Calculator
Calculate MAP from systolic and diastolic BP.
Enter your values
ⓘ Live results
Results
- Mean arterial pressure
- 93.3 mmHg
- Interpretation
- Normal range
Quick answer
Mean arterial pressure represents the average pressure in the arteries during one cardiac cycle.
MAP = DBP + 1/3 (SBP - DBP)
How to use the Mean Arterial Pressure Calculator
- 1Enter systolic and diastolic blood pressure from a validated reading.
- 2A MAP of 70-100 mmHg is generally considered adequate to perfuse vital organs in healthy adults.
- 3This is an informational calculation only — interpret results with a clinician, especially in critical care contexts.
Worked example
Using the values the calculator loads with:
Inputs
- Systolic BP120 mmHg
- Diastolic BP80 mmHg
Results
- Mean arterial pressure93.3 mmHg
- InterpretationNormal range
Frequently asked questions
Why isn't MAP just the average of SBP and DBP?
Diastole lasts about twice as long as systole in a cardiac cycle, so it's weighted more heavily.
When is MAP used clinically?
It's commonly monitored in critical care and anesthesia to assess organ perfusion.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.