Map Calculator

The upper cuff number.
The lower cuff number.
Both figures are always returned; this only chooses which one leads.
Mean arterial pressure
93.3 mmHg
Mean Arterial Pressure Calculator
Pulse pressure
40.0 mmHg
Mean arterial pressure
12.443 kPa
Formula used
MAP = DBP + (SBP - DBP) / 3
Worked out from DeMers D, Wachs D. Physiology, Mean Arterial Pressure. StatPearls, NCBI Bookshelf and 1 other source.
The one-third rule assumes about a third of the cardiac cycle is systole; it drifts at high heart rates, where invasive measurement is the reference.
Educational calculation only. Mean arterial pressure from a cuff reading is an approximation and is not a substitute for clinical assessment or invasive monitoring.

How this is worked out

3 steps
  1. Pulse pressure = SBP - DBP = 120 - 80 = 40 mmHg
  2. One third of the pulse pressure = 40 / 3 = 13.3333 mmHg
  3. MAP = DBP + PP/3 = 80 + 13.3333 = 93.3333 mmHg

Results are general information, not financial, tax, legal, medical or engineering advice.