Normal
- Systolic 119 mm Hg or
below
- Diastolic 79 mm Hg or below
Prehypertension
- Systolic 120-139 mm Hg
- Diastolic
80-89 mm Hg
High blood pressure (hypertension)
- Systolic 140 mm Hg or
above
- Diastolic 90 mm Hg or above
High blood pressure is also classified into stages.
- Stage 1 high blood
pressure:
- Systolic 140-159 mm
Hg
- Diastolic 90-99 mm Hg
- Stage 2 high blood
pressure:
- Systolic 160 mm Hg or
higher
- Diastolic 100 mm Hg or higher
