Here’s a general guide for adults:
| Category | Systolic (top number) | Diastolic (bottom number) |
|---|---|---|
| Normal | Less than 120 | Less than 80 |
| Elevated | 120–129 | Less than 80 |
| High blood pressure (Stage 1) | 130–139 | 80–89 |
| High blood pressure (Stage 2) | 140 or higher | 90 or higher |
| Hypertensive crisis* | 180 or higher | 120 or higher |
*A reading in the hypertensive crisis range warrants prompt medical evaluation, especially if accompanied by symptoms such as chest pain, severe headache, shortness of breath, vision changes, or confusion.
Blood pressure by age
While the target blood pressure remains similar, average readings tend to increase with age because arteries become stiffer. That doesn’t mean higher blood pressure is considered “healthy” simply because someone is older.
- 18–39 years: Aim for below 120/80 mmHg if possible.
- 40–59 years: Aim for below 120/80 mmHg; treatment is often recommended if blood pressure is consistently 130/80 mmHg or higher, depending on cardiovascular risk.
- 60 years and older: Many healthy older adults also benefit from maintaining blood pressure below 130/80 mmHg, though treatment goals may be adjusted based on frailty, medication tolerance, and other medical conditions.
Tips for getting an accurate reading
- Sit quietly for at least 5 minutes before measuring.
- Keep your feet flat on the floor and your back supported.
- Rest your arm at heart level.
- Avoid caffeine, smoking, and exercise for about 30 minutes beforehand.
- Take two readings 1 minute apart and record the average.
A single high reading doesn’t necessarily mean you have hypertension. Blood pressure is usually diagnosed based on repeated measurements taken on different days or with home or ambulatory monitoring.
If you tell me your age and your blood pressure reading (for example, 128/78), I can help interpret what it means in your situation.
