For most people, the following is a guide.
| Bl00d pressure | Systolic (top number) mm Hg | Diastolic (bottom number) mm Hg |
|---|---|---|
| Low | Less than 90 | Less than 60 |
| Optimal | Less than 120 | Less than 80 |
| Normal | 120–129 | 80–84 |
| Normal to high | 130–139 | 85–89 |
| High | Greater than 140 | Greater than 90 |
Around 120/80 mm Hg is often considered a typical blood pressure reading.
