Mean Arterial Pressure (MAP)
Average arterial pressure during one cardiac cycle.
What is Mean Arterial Pressure (MAP)?
Average arterial pressure during one cardiac cycle. Mean Arterial Pressure is intended for use in: Adults.
How to Use the Mean Arterial Pressure Calculator
- Enter Systolic BP in mmHg.
- Enter Diastolic BP in mmHg.
- Click Calculate to see your result and interpretation.
Formula & Version
This calculator uses formula version 1.0, last reviewed September 2026.
Clinical Considerations & Limitations
- The 1/3-2/3 approximation assumes a normal resting heart rate; it becomes less accurate at tachycardia, where a 0.4 diastolic weighting is sometimes used instead.
References
- Standard cardiovascular physiology formula: MAP = DBP + 1/3(SBP − DBP)
Frequently Asked Questions
What is Mean Arterial Pressure (MAP)?
Average arterial pressure during one cardiac cycle.
Who is Mean Arterial Pressure intended for?
Adults. Always confirm applicability to your specific patient before use.
What are the limitations of Mean Arterial Pressure?
The 1/3-2/3 approximation assumes a normal resting heart rate; it becomes less accurate at tachycardia, where a 0.4 diastolic weighting is sometimes used instead.
What formula or reference does Mean Arterial Pressure use?
Standard cardiovascular physiology formula: MAP = DBP + 1/3(SBP − DBP)
Is Mean Arterial Pressure a diagnosis?
No. Mean Arterial Pressure produces a score or estimate to support clinical decision-making — it is not a diagnosis and should be interpreted alongside full clinical judgement.
