A systolic blood pressure of 118 is good. It falls within the normal category, which covers any systolic (top number) reading below 120 and any diastolic (bottom number) below 80. At 118, you’re just 2 points under the threshold where blood pressure shifts from “normal” to “elevated,” so it’s worth understanding what that means and how to stay in this range.
Where 118 Falls on the Blood Pressure Scale
The American Heart Association and American College of Cardiology classify adult blood pressure into four categories:
- Normal: below 120 systolic and below 80 diastolic
- Elevated: 120 to 129 systolic and below 80 diastolic
- Hypertension Stage 1: 130 to 139 systolic or 80 to 89 diastolic
- Hypertension Stage 2: 140 or higher systolic or 90 or higher diastolic
A reading of 118 places you solidly in the normal range. If your diastolic number is also below 80, your overall blood pressure is considered healthy. If your bottom number is 80 or higher, though, the reading gets bumped into the higher category regardless of the top number. So a reading like 118/85 would actually count as Stage 1 hypertension because of that diastolic value.
Why the Bottom Number Matters Too
Blood pressure readings always come in pairs. The top number (systolic) measures the pressure in your arteries when your heart beats. The bottom number (diastolic) measures pressure between beats, when your heart is resting. Both numbers need to be in the normal range for the overall reading to count as normal. For a systolic of 118, you’d want your diastolic below 80 to stay in that healthy zone.
How Close 118 Is to “Elevated”
At 118, you’re only 2 points from the elevated category, which starts at 120. That’s not a reason to worry, but it is worth paying attention to. Blood pressure naturally fluctuates throughout the day based on stress, caffeine, activity, and even the time you take the reading. A single reading of 118 might be 122 the next morning or 115 after a relaxed evening. What matters is your average over time, not any single measurement.
If your readings consistently hover in the high 110s, small lifestyle shifts now can help keep you from drifting into the elevated range, where the risk of eventually developing hypertension starts to climb.
Does Age Change the Target?
Current guidelines do not set different blood pressure targets for younger versus older adults. A major clinical trial (known as SPRINT) studied patients across age groups and found that targeting a systolic pressure of 120 or lower reduced heart attacks, heart failure, and strokes over a three-year period compared to a more relaxed target of 140. The results held regardless of age, which is why the same categories apply whether you’re 35 or 75.
For people with diabetes or chronic kidney disease, guidelines are even more specific. Several medical organizations recommend keeping systolic pressure below 130 or even below 120 for these groups. A reading of 118 would meet all of those targets.
When Blood Pressure Gets Too Low
There is a floor. Low blood pressure, or hypotension, is generally defined as a reading below 90/60. Symptoms include dizziness, lightheadedness, fainting, and blurred vision. At 118 systolic, you’re well above that threshold, so there’s no concern about your pressure being too low.
Keeping Your Blood Pressure in the Normal Range
If your blood pressure is already at 118, the goal is maintenance. The habits that keep blood pressure healthy are straightforward, and none of them require dramatic changes.
Regular physical activity is one of the most effective tools. Aiming for about 30 minutes of moderate exercise (brisk walking, cycling, swimming) five days a week is enough to have a measurable impact. Diet plays an equally large role. Eating more fruits, vegetables, and potassium-rich foods while cutting back on sodium and saturated fat helps keep arteries flexible and pressure stable. The DASH eating plan, specifically designed around blood pressure, has a strong track record for this.
Carrying extra weight increases the workload on your heart and raises blood pressure over time, so staying at a healthy weight provides a consistent protective effect. Alcohol also nudges blood pressure upward. Keeping intake moderate (no more than two drinks a day for men, one for women) helps avoid that effect. And smoking raises blood pressure acutely with every cigarette while also damaging blood vessel walls, making long-term pressure control harder.
None of these factors work in isolation. Someone who exercises regularly but eats a high-sodium diet may still see their numbers creep up over the years. The combination of several good habits is what keeps readings consistently in the normal range as you age.