Mean arterial pressure (MAP) calculator

General wellness information, not medical advice. Results are estimates based on published formulas and ranges; they are not a diagnosis. Read more.

How to use the map calculator

1. Enter your blood pressure. Systolic and diastolic in mmHg from a cuff.
2. Read MAP. Normal is roughly 70 to 100 mmHg. Clinicians use MAP to judge whether organs are adequately perfused.
3. Read pulse pressure. Typical is about 40 mmHg. It widens with age and arterial stiffness.

What MAP tells you

Because the heart spends about two thirds of each cycle in diastole, MAP sits closer to the diastolic value than a simple average would. It is a quick proxy for the pressure driving blood into organs. In hospitals, a MAP of at least 65 mmHg is a common target in critically ill patients; for everyday readings, 70 to 100 is the usual normal range.

Limits of the formula

The one-third rule assumes a resting heart rate. At high heart rates the proportion of time in diastole shrinks and the formula underestimates true MAP. It is fine for resting cuff readings, which is what this calculator is for.

Wellness disclaimer. Pulse Tracker is intended for general wellness use only. It is not a medical device, is not FDA cleared or approved, and is not intended to diagnose, treat, cure or prevent any disease or condition. Blood pressure shown in the app is either a value you entered from your own cuff or an estimate derived from the pulse signal after cuff calibration; it is not a measurement and must not be used to make medical decisions. Read the full wellness disclaimer. Camera readings, estimates and classifications are for general information only and can be affected by movement, lighting, skin temperature and other factors. Do not use them to diagnose, treat or make decisions about a medical condition. Always consult a qualified healthcare professional, and call emergency services if you have chest pain, shortness of breath, fainting or other urgent symptoms.