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

• Normal pulse pressure: approximately 40 mmHg (range: 30–50 mmHg)
• Normal MAP: 70–100 mmHg
• Critical MAP threshold: below 60 mmHg (organs begin to suffer)

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.