Blood pressure norms can vary with age, sex, and health status, but generally, “normal” blood pressure is defined for adults and children differently. Here’s a clear breakdown:
For Adults (18 years and older)
- Normal: ~120/80 mmHg
- Elevated: Systolic 120–129 & Diastolic <80 mmHg
- Hypertension Stage 1: Systolic 130–139 or Diastolic 80–89 mmHg
- Hypertension Stage 2: Systolic ≥140 or Diastolic ≥90 mmHg
- Hypertensive Crisis: Systolic >180 or Diastolic >120 mmHg (emergency)
Note: Adults over 60 may have slightly higher targets in some guidelines, e.g., <150/90 mmHg.
For Children and Adolescents
Children’s blood pressure varies by age, sex, and height percentile. Rough general ranges:
| Age (years) | Systolic (mmHg) | Diastolic (mmHg) |
|---|---|---|
| 1–3 | 80–110 | 50–80 |
| 4–5 | 85–115 | 55–80 |
| 6–9 | 90–120 | 60–80 |
| 10–12 | 95–125 | 60–85 |
| 13–15 | 100–130 | 65–85 |
| 16–18 | 110–135 | 65–85 |
These ranges are approximate. Pediatric blood pressure is usually assessed using percentile charts.
Key Points
- Systolic pressure (top number) indicates the pressure when the heart beats.
- Diastolic pressure (bottom number) indicates the pressure when the heart rests.
- Lifestyle factors—like diet, activity, stress, and sleep—can affect readings.
- Always consider trends over time rather than a single reading.
If you want, I can make a visual age-to-blood-pressure chart that shows normal ranges from infancy to elderly adults—it makes it much easier to read at a glance.
Do you want me to make that chart?
