A blood pressure of 110/64 is a good reading. It falls squarely in the “normal” category under the 2025 guidelines from the American Heart Association and American College of Cardiology, which define normal blood pressure as below 120/80 mmHg. For most people, this number reflects a heart and circulatory system working efficiently.
Where 110/64 Falls on the Scale
Blood pressure is classified into four categories for adults:
- 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 110/64, both numbers sit comfortably inside the normal range. You’re well below the threshold where lifestyle changes or treatment would be recommended. The overall treatment goal for adults with high blood pressure is to get below 130/80, so you’re already significantly under that target.
What Each Number Tells You
The top number (110, systolic) measures the pressure in your arteries when your heart beats. The bottom number (64, diastolic) measures the pressure between beats, when your heart is resting. Both numbers matter, and both of yours are in a healthy range.
A systolic reading of 110 is typical of someone with good cardiovascular health. People who exercise regularly tend to have lower resting blood pressure because a stronger heart pumps blood more efficiently with each beat. Exercise also helps blood vessels stay flexible, which reduces resistance and keeps pressure low. So if you’re physically active, a reading like this is especially expected.
Is a Diastolic of 64 Too Low?
This is where some readers may have a second concern. A diastolic of 64 is normal and healthy for the vast majority of adults. The threshold where diastolic pressure starts raising red flags is generally at or below 60 mmHg, and even then, context matters enormously.
Research published in the AHA journal Hypertension found that diastolic readings of 60 or below were associated with reduced survival in frail elderly patients who already had cardiovascular disease. In that population, the heart may struggle to receive adequate blood flow during the resting phase of each beat when diastolic pressure drops too low. The same study identified 70 mmHg as an “optimal” diastolic level for older adults with isolated systolic hypertension. But these findings apply to a specific group: older adults with existing heart conditions on blood pressure medication, not the general population.
At 64, your diastolic reading is above that concern threshold and well within the range associated with good health. If you’re younger or middle-aged and have no heart disease, a diastolic in the low-to-mid 60s is perfectly fine.
When a Low-Normal Reading Could Be a Problem
Blood pressure of 110/64 is not considered hypotension (low blood pressure). But numbers alone don’t tell the whole story. What matters is how you feel. Many people walk around with blood pressure in this range and never experience a single symptom. For physically active and younger adults, low-normal readings with no symptoms are common and harmless.
The symptoms to watch for are dizziness, lightheadedness, fainting, or feeling unsteady when you stand up. These happen when your body can’t compensate for a drop in pressure and certain parts of your body, particularly your brain, temporarily don’t get enough blood flow. If you experience these regularly alongside a reading like 110/64, it’s worth mentioning to your doctor. If you feel fine, the reading is simply a sign of a healthy cardiovascular system doing its job.
During Pregnancy
If you’re pregnant and got a reading of 110/64, that’s reassuring. High blood pressure during pregnancy is defined as 140/90 or higher on two separate readings at least four hours apart, with severe hypertension starting at 160/110. Your reading is far from those thresholds. Blood pressure often dips during the second trimester before rising again later in pregnancy, so some fluctuation is expected.
Making Sure Your Reading Is Accurate
A single reading is a snapshot, not a diagnosis. To make sure 110/64 reflects your true resting blood pressure, the CDC recommends a specific protocol: sit in a comfortable chair with your back supported for at least five minutes before measuring. Keep both feet flat on the floor with legs uncrossed. Rest the arm wearing the cuff on a table at chest height. Don’t eat, drink, or use the bathroom in the 30 minutes beforehand, and stay quiet during the reading.
Small details can skew results more than you’d expect. Crossing your legs or letting your arm hang at your side instead of resting on a table can push the reading higher. If you got 110/64 without following these steps, your actual resting pressure may be even lower. Taking two or three readings a minute apart and averaging them gives you the most reliable number.
Tracking your blood pressure over several days at the same time of day provides a much clearer picture than any single measurement. If your readings consistently land in the normal range and you feel well, 110/64 is exactly the kind of number you want to see.