A blood pressure of 115/70 is a good reading. It falls squarely in the “normal” category, which the American Heart Association and American College of Cardiology define as below 120/80 mmHg. This classification was reaffirmed in the 2025 joint guidelines, which kept the same thresholds established in 2017. In short, 115/70 is exactly where you want to be.
Where 115/70 Falls on the Scale
Current guidelines 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 115/70, both numbers sit comfortably in the normal range. Your systolic (the top number, representing the pressure when your heart beats) is 5 points below the cutoff for “elevated.” Your diastolic (the bottom number, representing the pressure between beats) is 10 points below the threshold for concern. There’s no separate category for “optimal” in the current system, but 115/70 is about as close to textbook ideal as a reading gets.
What This Means for Heart Disease Risk
Cardiovascular disease risk has a direct, continuous relationship with blood pressure. Starting at 115/75, the risk of heart attack and stroke doubles with every increase of 20 points systolic or 10 points diastolic. So someone at 135/85 has roughly double the cardiovascular risk of someone at 115/75, and someone at 155/95 has roughly four times the risk. At 115/70, you’re sitting near the baseline of that curve, which is the lowest-risk zone.
Is 115/70 Too Low?
No. Low blood pressure, or hypotension, is generally defined as a reading below 90/60. At 115/70, you’re well above that threshold. More importantly, most health professionals only consider blood pressure “too low” when it causes symptoms like dizziness, fainting, blurred vision, or fatigue. If you feel fine at 115/70, the reading is perfectly healthy.
What counts as low can vary from person to person. Some people naturally run on the lower side and feel completely normal at readings that would make others lightheaded. The number alone doesn’t tell the whole story.
Blood Pressure Changes With Age
The major guidelines don’t set different “ideal” targets for different age groups. Normal is below 120/80 whether you’re 25 or 65. That said, systolic blood pressure tends to climb as you get older because arteries stiffen and plaque builds up over time. For people over 50, the systolic number becomes the more important predictor of cardiovascular risk.
If you’re reading 115/70 in your 20s or 30s, that’s typical. If you’re reading 115/70 in your 60s or 70s, that’s excellent and suggests your blood vessels are in good shape. Either way, it’s a number worth maintaining.
Why a Single Reading Isn’t the Full Picture
Blood pressure is not a fixed number. It shifts throughout the day, rising in the morning, peaking around midday, and dropping in the evening and overnight during sleep. A reading of 115/70 at 9 a.m. might look different from one taken at 3 p.m. or after a stressful phone call.
Several everyday factors can temporarily push your numbers up or down: caffeine, exercise, a full bladder, stress, and even the anxiety of being in a clinic (sometimes called white-coat hypertension). If you got 115/70 once and want to know whether it reflects your usual blood pressure, taking multiple readings over several days gives a much more reliable picture.
Getting an Accurate Reading at Home
If you’re monitoring at home, small details make a big difference in accuracy. Avoid caffeine, smoking, and exercise for at least 30 minutes before you measure. Empty your bladder first. Sit quietly for five minutes before taking a reading, and don’t talk or check your phone during that rest period.
When you’re ready, sit with your feet flat on the floor and your back supported. Place the cuff on your bare upper arm, not over clothing, with the bottom edge just above the bend of your elbow. Rest your arm on a flat surface at heart level (a pillow underneath can help). Taking two or three readings a minute apart and averaging them gives you the most reliable result.
During Pregnancy
The American College of Obstetricians and Gynecologists uses the same threshold: normal blood pressure in pregnancy is below 120/80. A reading of 115/70 during pregnancy is reassuring and well below the levels that would raise concerns about preeclampsia or gestational hypertension. Blood pressure naturally fluctuates during pregnancy, often dipping in the second trimester before rising again closer to delivery, so continued monitoring matters even when early readings look good.
Keeping Your Blood Pressure in This Range
Since 115/70 is already normal, the goal is maintenance rather than treatment. The habits that keep blood pressure healthy are the usual suspects: regular physical activity, a diet rich in fruits, vegetables, and whole grains while moderate in sodium, maintaining a healthy weight, limiting alcohol, managing stress, and getting enough sleep. None of that is groundbreaking, but it’s what the data consistently supports.
Periodic checks are still worthwhile even when your numbers are good. Blood pressure can creep upward gradually without symptoms. Catching a shift from 115/70 to 130/85 early gives you a chance to course-correct with lifestyle changes before medication ever enters the conversation.