Normal blood pressure for most adults is considered to be 120/80 millimeters of mercury (mm Hg) or lower. This is written as 120/80 mm Hg, and you’d say this is “120 over 80.” This article ...

The abbreviation mm Hg stands for millimeters of mercury, the chemical element that ... mm Hg High blood pressure stage 1 (severe) 130-139 80-89 High blood pressure stage 2 (more severe) 140 ...

According to the Centers for Disease Control and Prevention (CDC), a normal blood pressure reading is less than 120/80 millimeters of mercury (mm Hg). This includes a systolic pressure reading ...