What is a normal blood pressure?
For adults, normal blood pressure is generally less than 120/80 mmHg. Readings of 130/80 or higher are classed as high blood pressure under current US guidelines.
The American Heart Association and American College of Cardiology use these categories for adults: normal is under 120 systolic and under 80 diastolic. Elevated is 120 to 129 systolic with diastolic under 80. Stage 1 hypertension is 130 to 139 systolic or 80 to 89 diastolic, and stage 2 is 140/90 or higher. Some countries use slightly different thresholds.
A reading of 180/120 or higher is a hypertensive crisis. If it comes with symptoms like chest pain, shortness of breath, weakness or vision changes, it needs emergency care. A single high reading does not mean someone has hypertension. Doctors usually look at several readings over time.
Keeping it healthy
Healthy habits can help keep blood pressure in a normal range: eating less salt, eating more fruits and vegetables, staying active, limiting alcohol, not smoking, managing stress and keeping a healthy weight. Many people with high blood pressure also need medication prescribed by a doctor.
Did You Know?
Home blood pressure monitors are widely available. Doctors recommend sitting quietly for five minutes with your feet flat and arm supported at heart level before measuring.
This answer is general information, not medical advice. For a personal health question, talk to a doctor.