Normal Blood Pressure by Age
There isn’t one single “normal” blood-pressure number for every age. For adults, the same general blood-pressure categories are used regardless of age, while children and teenagers are assessed differently based on age, sex, and height.
For adults, a commonly used classification is:
| Blood pressure | Systolic (top) | Diastolic (bottom) |
|---|---|---|
| Normal | <120 | <80 |
| Elevated | 120–129 | <80 |
| High — Stage 1 | 130–139 | 80–89 |
| High — Stage 2 | ≥140 | ≥90 |
| Severely high | ≥180 | and/or ≥120 |
A single reading doesn’t necessarily mean you have hypertension. Blood pressure varies with stress, exercise, caffeine, medications, illness, and even how you measure it. Repeated readings taken correctly are much more informative.
For children, there isn’t a simple adult-style table by age; clinicians use pediatric blood-pressure percentiles based on the child’s age, sex, and height.
If you tell me the person’s age and blood-pressure reading (for example, 65 years old, 145/85), I can explain what that reading generally means.
