Blood Pressure Classification Formula

Blood pressure classification is based on the following ranges:

$$ \text{Classification} = \begin{cases} \text{Low Blood Pressure} & \text{if } \text{Systolic} < 90 \text{ and } \text{Diastolic} < 60 \\ \text{Normal Blood Pressure} & \text{if } \text{Systolic} < 120 \text{ and } \text{Diastolic} < 80 \\ \text{Elevated Blood Pressure} & \text{if } 120 \leq \text{Systolic} \leq 129 \text{ and } \text{Diastolic} < 80 \\ \text{Hypertension Stage 1} & \text{if } 130 \leq \text{Systolic} \leq 139 \text{ or } 80 \leq \text{Diastolic} \leq 89 \\ \text{Hypertension Stage 2} & \text{if } \text{Systolic} \geq 140 \text{ or } \text{Diastolic} \geq 90 \\ \text{Hypertensive Crisis} & \text{if } \text{Systolic} > 180 \text{ or } \text{Diastolic} > 120 \\ \end{cases} $$

How to Use the Blood Pressure Calculator

This calculator helps classify your blood pressure based on systolic and diastolic values. Enter your blood pressure readings and click "Calculate" to see the classification.

Understanding Blood Pressure

Blood pressure is measured in two values:

• Systolic: The pressure when the heart beats (normal range: 90-120 mmHg).
• Diastolic: The pressure when the heart rests between beats (normal range: 60-80 mmHg).

Blood pressure is classified into categories such as normal, elevated, and various stages of hypertension.

Blood Pressure Classification

Here are the categories based on systolic and diastolic values:

• Low Blood Pressure: Systolic < 90 mmHg and Diastolic < 60 mmHg.
• Normal Blood Pressure: Systolic < 120 mmHg and Diastolic < 80 mmHg.
• Elevated Blood Pressure (Prehypertension): Systolic 120-129 mmHg and Diastolic < 80 mmHg.
• Hypertension Stage 1: Systolic 130-139 mmHg or Diastolic 80-89 mmHg.
• Hypertension Stage 2: Systolic ≥ 140 mmHg or Diastolic ≥ 90 mmHg.
• Hypertensive Crisis: Systolic > 180 mmHg or Diastolic > 120 mmHg (requires immediate medical attention).