The classification of normal blood pressure differs slightly depending on the guideline and should be lower than 120/80 mmHg (American guideline) or 130/85 mmHg (European guideline). Both guidelines also define intermediate thresholds, like elevated, high normal, and optimal blood pressure.



How to calculate blood pressure

Blood pressure is most commonly measured using a sphygmomanometer, which is also known as a blood pressure monitor or gauge. 

To make sure that your results is reliable, you should:

• sit still - make sure that you have been at rest for at least 5 minutes before the measurement and have not exercised for at least 30 minutes before;
• refrain from caffeine and cigarettes for at least 30 minutes before the measurement;
• sit correctly - your back should be straight and supported and your arms should rest on a flat surface with the upper arm at heart level;
• always take the measurement at the same time of the day;
• take at least two measurements each time and record them somewhere; and
• always place the blood pressure monitor on your skin, do not take measurements over your clothes.