Blood Pressure Reference Chart
Guidelines released by the National Heart, Lung, and Blood Institute in May 2003 state that your blood pressure is normal only if it is below 120 systolic over 80 diastolic (120/80). People who are considered prehypertensive have a systolic blood pressure between 120 and 139 or a diastolic blood pressure between 80 and 89. People who are considered to have high blood pressure have a systolic blood pressure of 140 or more or have a diastolic pressure of 90 or more.
Understanding these numbers is very important but can also be very confusing. If you’re having trouble determining whether or not your blood pressure is at a normal level, consult the chart below.