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SEADOC

Blood Pressure Calculator

![Blood Pressure Chart](https://seadoc-cms.s3.ap-southeast-1.amazonaws.com/blood_pressure_calculator_983a0cc7d8.jpg)

### Blood Pressure Numbers

Blood pressure is measured in millimeters of mercury (mmHg) and is given as 2 figures:

- Systolic pressure – the pressure when your heart pushes blood out
- Diastolic pressure – the pressure when your heart rests between beats

For example, if your blood pressure is "140 over 90" or 140/90mmHg, it means you have a systolic pressure of 140mmHg and a diastolic pressure of 90mmHg.

### Blood Pressure Readings

- Emergency: > 180/120mmHg
- High Blood Pressure (hypertension stage 2): 160/100mmHg - 179/119mmHg
- High Blood Pressure (hypertension stage 1): 140/90mmHg - 159/99mmHg
- High Blood Pressure (pre-hypertension): 121/81mmHg - 139/90mmHg
- Normal Blood Pressure: 90/60mmHg - 120/80mmHg
- Low Blood Pressure (hypotension): < 90/60mmHg