120 or below.
Normal blood pressure for adults is defined as a systolic pressure below 120 mmHg and a diastolic pressure below 80 mmHg. It is normal for blood pressures to change when you sleep, wake up, or are excited or nervous. When you are active, it is normal for your blood pressure to increase. A normal systolic blood pressure is 120 or below. A systolic blood pressure of 120-139 means you have normal blood pressure that is higher than ideal, or borderline high blood pressure. Even people with this level are at a greater risk of developing heart disease. A normal diastolic blood pressure number is 80 or less. A diastolic blood pressure between 80 and 89 is normal but higher than ideal. A diastolic blood pressure number of 90 or higher, on repeated measurements, is considered to be hypertension or high blood pressure. The second number, called diastolic blood pressure, is the pressure when your heart fills with blood. The safest range, often called normal blood pressure, is a systolic blood pressure of less than 120 and a diastolic blood pressure of less than 80. This is stated as 120/80. A normal diastolic blood pressure number is less than 80. A diastolic blood pressure between 80 and 89 indicates prehypertension. A diastolic blood pressure number of 90 or higher is considered to be hypertension or high blood pressure. 120 (sys) 80 (diastolic) is the classic answer for highest normal blood pressure in adults. For adults, healthy blood pressure targets depend on health history, with lower targets for adults with certain conditions. Children's blood pressure norms are based on age and height percentile. The systolic blood pressure number is always said first, and then the diastolic blood pressure number is given. For example, your blood pressure may be read as 120 over 80 or written as 120/80. Blood pressure is measured in millimeters of mercury (mm Hg). 1 | 2 | 3.
http://www.nhlbi.nih.gov/health/health-topics/topics/hbp/ http://www.webmd.boots.com/hypertension-high-blood-pressure/guide/diastolic-systolic http://www.webmd.boots.com/hypertension-high-blood-pressure/guide/diastolic-systolic https://www.nia.nih.gov/health/publication/high-blood-pressure http://www.webmd.com/hypertension-high-blood-pressure/guide/diastolic-and-systolic-blood-pressure-know-your-numbers http://www.answers.com/Q/What_is_the_normal_range_for_systolic_and_diastolic_blood_pressure http://www.webmd.com/hypertension-high-blood-pressure/guide/diastolic-and-systolic-blood-pressure-know-your-numbers
normal range of systolic blood pressure