A blood pressure of 115/72 is a good reading. It falls squarely in the “normal” category, which is defined as a top number (systolic) below 120 and a bottom number (diastolic) below 80. This applies across all adult age groups.
Where 115/72 Falls on the Chart
The most recent guidelines from the American Heart Association and American College of Cardiology, published in 2025, break blood pressure into four categories:
- Normal: below 120 systolic and below 80 diastolic
- Elevated: 120 to 129 systolic and below 80 diastolic
- Stage 1 hypertension: 130 to 139 systolic or 80 to 89 diastolic
- Stage 2 hypertension: 140 or higher systolic or 90 or higher diastolic
At 115/72, both numbers sit comfortably in the normal range. You’re not borderline elevated, and you’re well above the threshold for low blood pressure, which is generally considered anything below 90/60.
What the Two Numbers Mean
The top number, 115, measures the pressure inside your arteries when your heart contracts and pushes blood out. The bottom number, 72, measures the pressure between beats, when your heart is relaxed and refilling. Both numbers matter, though the top number becomes a more important predictor of heart disease risk after age 50, because arteries naturally stiffen over time.
The gap between the two numbers is called pulse pressure. For a reading of 115/72, that gap is 43, which is close to the normal benchmark of 40. A pulse pressure in this range suggests your arteries are flexible and healthy. As that gap widens significantly, the risk of cardiovascular problems rises, so a number near 40 is a good sign.
Why a Single Reading Isn’t the Full Picture
Blood pressure naturally fluctuates throughout the day. It tends to be higher during waking hours and lower at night, driven by shifts in your nervous system’s activity levels. Stress, caffeine, a full bladder, or even a conversation can temporarily push your numbers up. A single reading of 115/72 is reassuring, but a pattern of readings over days or weeks gives you a much more reliable picture of your cardiovascular health.
How you measure also matters. The CDC recommends sitting in a comfortable chair with your back supported for at least five minutes before taking a reading. Your arm should rest on a table at chest height, not hang at your side, which can artificially raise the number. The cuff should fit snugly against bare skin, not over a sleeve. Skipping any of these steps can throw a reading off by several points in either direction.
Is It Possible for Blood Pressure to Be Too Low?
At 115/72, you’re nowhere near the low blood pressure range. Hypotension is generally defined as a reading below 90/60, and even then, it only matters if it causes symptoms. Some people naturally run low and feel perfectly fine. The symptoms worth watching for include dizziness, blurred vision, fainting, fatigue, and difficulty concentrating. If your numbers are in a normal range and you feel well, there’s nothing to worry about.
Keeping Your Numbers in This Range
Blood pressure tends to creep upward with age as arteries lose flexibility and plaque builds up over time. A reading of 115/72 today doesn’t guarantee the same number in five or ten years. The habits that help maintain normal blood pressure are familiar but worth reinforcing: regular physical activity, a diet rich in fruits, vegetables, and whole grains while low in sodium, maintaining a healthy weight, limiting alcohol, and managing stress.
Checking your blood pressure periodically at home or at a pharmacy kiosk helps you spot trends before they become problems. If your top number starts consistently landing between 120 and 129, you’ve moved into the “elevated” category, which is a signal to pay closer attention to lifestyle factors before medication ever enters the conversation.