Pulse Pressure Calculator: What the Gap Between Your BP Numbers Means
Most people focus on their systolic and diastolic blood pressure numbers individually. But the difference between them — called pulse pressure — is itself a clinically important value. It reflects arterial stiffness and can predict cardiovascular risk independently of either number alone.
What Is Pulse Pressure?
Pulse Pressure = Systolic Pressure − Diastolic Pressure
It represents the force generated by each heartbeat. A normal pulse pressure is 40–60 mmHg. Outside this range suggests something worth investigating.
Worked Example
Blood pressure: 140/75 mmHg.
Pulse pressure = 140 − 75 = 65 mmHg (High — arterial stiffness risk)
Calculate yours with our Pulse Pressure Calculator.
Pulse Pressure Interpretation
| Pulse Pressure | Category | Clinical Significance |
|---|
| Below 40 mmHg | Low | May indicate heart failure, hypovolemia, or severe aortic stenosis |
| 40–60 mmHg | Normal | Healthy arterial compliance |
| Above 60 mmHg | High/Wide | Associated with arterial stiffness, aortic regurgitation, anaemia |
Why High Pulse Pressure Matters
- Wide pulse pressure is associated with arterial stiffness — the arteries lose their elastic recoil with age, hypertension, and atherosclerosis.
- Pulse pressure above 60 mmHg is an independent predictor of cardiovascular events, particularly in older adults.
- It is one of the signs that physicians look for when assessing conditions like aortic regurgitation (leaky aortic valve).
What Causes Wide Pulse Pressure?
- Atherosclerosis (hardened, stiff arteries)
- Aortic regurgitation
- Thyrotoxicosis (overactive thyroid — increases cardiac output)
- Severe anemia (body compensates with higher cardiac output)
- Normal ageing (arteries naturally stiffen over time)
Practical Tips
Monitor trends, not single readings. A single reading is less informative than a consistent pattern over weeks or months. Track your readings in a log or app.
Lifestyle interventions that reduce arterial stiffness include regular aerobic exercise (particularly Zone 2 cardio), sodium restriction, omega-3 fatty acids, and maintaining a healthy weight.
Final Thoughts
Pulse pressure adds an important dimension to blood pressure monitoring. If your readings consistently show a wide pulse pressure, it is worth a conversation with your doctor.
Calculate your pulse pressure with our free Pulse Pressure Calculator.