Blood pressure changes with age — usually a little, sometimes a lot. Knowing roughly what to expect for your age helps you spot a trend that needs attention before it becomes a problem.
This guide gives you a simple chart, what the two numbers mean, and a few honest caveats. It is wellness guidance, not medical advice. If your readings concern you, talk to your doctor.
The two numbers, briefly
Every blood pressure reading is two numbers — for example, 118/76 mmHg.
- Systolic (top number): the pressure when your heart beats and pushes blood out.
- Diastolic (bottom number): the pressure when your heart rests between beats.
Both matter, but for most adults, doctors look more closely at the systolic number — it tends to rise with age and is a stronger predictor of heart risk.
General ranges, by age
The numbers below are typical averages for healthy adults — not strict cut-offs. Many factors shift them: medication, time of day, stress, posture, and how your monitor is calibrated.
| Age | Typical systolic | Typical diastolic |
|---|---|---|
| 18–29 | 110–120 | 70–78 |
| 30–39 | 112–122 | 72–80 |
| 40–49 | 115–125 | 74–82 |
| 50–59 | 118–128 | 76–84 |
| 60–69 | 122–132 | 76–84 |
| 70+ | 125–135 | 74–82 |
For all adults, current guidelines (American Heart Association, 2017 and ESC/ESH 2023) call anything below 120/80 mmHg “normal,” 120–129/<80 “elevated,” and 130/80 or higher “stage 1 hypertension.”
What to do with this information
1. Look at the trend, not a single reading
One high reading after a stressful afternoon means very little. Two weeks of consistent morning readings above your typical range means a lot. This is where logging helps — it's the difference between a snapshot and a story.
2. Measure correctly
Sit quietly for five minutes first. Feet flat. Arm supported at heart height. Don't talk during the reading. Take two measurements a minute apart and use the average. Most “high” readings disappear when people slow down and follow these basics.
3. Note the context
Tag whether it's a morning or evening reading. After exercise. Before or after coffee. The patterns that emerge are far more useful than a list of bare numbers — and a tagged log gives your doctor a much richer picture in a 15-minute appointment.
If you take only one thing away: the question is rarely “is this number too high?” — it's “is this number, in this context, a change from my baseline?”
When to talk to your doctor
- Several readings above 140/90 over a week, even at rest
- A single reading above 180/120 — call your doctor the same day
- Persistent dizziness, headaches, or chest discomfort with high readings
- Wide swings between morning and evening readings
Track this in BloodSnap. The app lets you log BP with morning/evening tags, see your trend over weeks, and export a clean PDF for your next appointment.