Your reading is made up of 2 numbers and is measured in millimetres of mercury millimetres of mercury(mmHg).

Enter the highest number first. This is the highest level your blood pressure reaches when your heart beats (systolic).

Then enter the lower number. This is the lowest level your blood pressure reaches when your heart relaxes between beats (diastolic).

How you had your reading done will affect your result. Blood pressure targets for readings done at home are different to those done in a clinic or pharmacy by a healthcare professional.

Your reading is made up of 2 numbers and is measured in millimetres of mercury millimetres of mercury(mmHg).

Enter the highest number first. This is the highest level your blood pressure reaches when your heart beats (systolic).

Then enter the lower number. This is the lowest level your blood pressure reaches when your heart relaxes between beats (diastolic).