Useful blood pressure chart

Human Blood Pressure Range Diagram

The 1st Number: Systolic pressure is the pressure generated when the heart contracts .
210 - 120 -
Stage 4 High Blood Pressure 180 - 110 -
Stage 3 High Blood Pressure 160 - 100 -
Stage 2 High Blood Pressure 140 - 90 -
Stage 1 High Blood Pressure 140 - 90 -
BORDERLINE HIGH130 - 85 -
High Normal120 - 80 -
NORMAL Blood Pressure 110 - 75 -
Low Normal 90 - 60 -
BORDERLINE LOW 60 - 40 -
TOO LOW Blood Pressure 50 - 33 - DANGER Blood PressureLOW Blood Pressure Symptoms -Weak, Tired, Dizzy, Fainting, Coma

A very useful chart as your reference.