Pulse Pressure Calculator

What Is Pulse Pressure? Pulse pressure is the difference between your systolic (upper) and diastolic (lower) blood pressure readings. It reflects how hard your heart pumps with each beat and the elasticity of your arterial walls.

Formula: Pulse Pressure (PP) = Systolic BP − Diastolic BP

Mean Arterial Pressure (MAP): MAP = Diastolic BP + (Pulse Pressure / 3)

MAP represents the average pressure in arteries during one cardiac cycle. It is a better indicator of organ perfusion pressure than systolic or diastolic alone.

Normal values

• Pulse pressure: most healthy adults sit near 40 mmHg. This calculator treats 25 to 60 as the normal band, which is wider than the 30 to 50 that many sources quote, because the numbers outside 25 to 60 are the ones that actually carry clinical weight.
• Mean arterial pressure: 70 to 100 mmHg
• Below 60 mmHg MAP is the point where organ perfusion starts to suffer. It is the number intensive care targets ahead of systolic or diastolic.

Blood pressure categories (AHA/ACC 2017)

Staged on whichever number is worse, which is the part people get wrong:

A reading of 128/95 is Stage 2, not “elevated”, because the diastolic alone puts it there. The systolic gets all the attention and the diastolic quietly does the staging more often than people expect.

Wide Pulse Pressure (above 60 mmHg) A wide pulse pressure means the heart is pumping harder or the arteries have become stiff. Common causes include:

• Aortic regurgitation (leaky aortic valve)
• Atherosclerosis (hardened arteries, common with aging)
• Hyperthyroidism
• Severe anemia
• Patent ductus arteriosus (a congenital heart defect)

Narrow Pulse Pressure (below 25 mmHg) A narrow pulse pressure means the heart is pumping less effectively. Common causes include:

• Aortic stenosis (narrowed aortic valve)
• Congestive heart failure
• Cardiac tamponade (fluid around the heart)
• Severe blood loss or shock

Aging and Pulse Pressure Pulse pressure naturally widens with age as arteries lose elasticity. A pulse pressure above 60 mmHg in people over 60 is associated with increased cardiovascular risk, even when systolic BP is in a normal range.