Blood Pressure

Quickly measure and calculate your systolic and diastolic blood pressure

The pressure that exerts on the walls of arteries. Diastolic pressure measures the pressure in the bloodstream when the heart (left ventricle) is relaxed and filling with blood. Systolic blood pressure measures the forces exerted after the heart contracts.

Blood Pressure Protocol


Blood pressure cuff and stethoscope


  1. Have the participant sit down with arm supported and level to the heart.
  2. Strap the cuff about 1 inch above the elbow making sure the fit is snug.
  3. Place the diaphragm of the stethoscope over the brachial artery and put ear pieces in ears.
  4. Tighten the screw on the hand pump of the cuff and inflate until the last heard heart beat, record this number as the Systolic measurement.
  5. Slowly loosen the screw to let out air in the cuff at about 5mm/dl/sec. Continue to listen the heart beat until you can’t hear anymore, record this number as the diastolic measurement.

Blood Pressure Calculation


Calculation Result

Systolic Blood Pressure (mmHg)
Systolic Blood Pressure Classification
Diastolic Blood Pressure (mmHg)
Diastolic Blood Pressure Classification

Blood Pressure Classification Chart

Systolic Blood Pressure

Hypotension 0 89
Normal 90 119
Prehypertension 120 129
Hypertension 1 130 159
Hypertension 2 160 > 160

Diastolic Blood Pressure

Hypotension 0 59
Normal 60 79
Prehypertension 80 89
Hypertension 1 90 99
Hypertension 2 100 > 100

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