Blood Pressure Calculator – BP Monitor
Calculate and monitor your blood pressure category and cardiovascular health
This blood pressure calculator is for informational purposes only and does not constitute medical advice. Blood pressure readings can vary throughout the day and may be affected by various factors. Always consult with a qualified healthcare provider for proper diagnosis, treatment, and monitoring of blood pressure conditions. If you experience symptoms of a hypertensive crisis (chest pain, shortness of breath, severe headache), seek emergency medical attention immediately.
Table of Contents
How to Use
- Enter your systolic blood pressure (top number) in mmHg
- Enter your diastolic blood pressure (bottom number) in mmHg
- Click calculate to see your blood pressure category
- Review the interpretation and recommendations
What is Blood Pressure?
Blood pressure is the force of blood pushing against the walls of your arteries as your heart pumps blood. It's measured in millimeters of mercury (mmHg) and recorded as two numbers: systolic pressure over diastolic pressure.
The systolic number (top number) measures the pressure when your heart beats and pushes blood through the arteries. The diastolic number (bottom number) measures the pressure when your heart rests between beats.
Blood Pressure Categories
| Category | Systolic (mmHg) | Diastolic (mmHg) |
|---|---|---|
| Normal | Less than 120 | and Less than 80 |
| Elevated | 120-129 | and Less than 80 |
| Hypertension Stage 1 | 130-139 | or 80-89 |
| Hypertension Stage 2 | 140 or higher | or 90 or higher |
| Hypertensive Crisis | Higher than 180 | and/or Higher than 120 |
Health Implications
High blood pressure (hypertension) increases your risk of:
- Heart disease and heart attack
- Stroke
- Kidney disease
- Vision loss
- Sexual dysfunction
- Peripheral artery disease
- Cognitive decline and dementia
Managing Blood Pressure
Lifestyle changes that can help lower blood pressure:
- Maintain a healthy weight
- Exercise regularly (150 minutes per week of moderate activity)
- Follow a DASH diet (rich in fruits, vegetables, and low-fat dairy)
- Reduce sodium intake (less than 2,300 mg per day)
- Limit alcohol consumption
- Quit smoking
- Manage stress through relaxation techniques
- Get adequate sleep (7-9 hours per night)
- Take prescribed medications as directed
Frequently Asked Questions
- What is considered normal blood pressure?
- Normal blood pressure is less than 120/80 mmHg. This means your systolic pressure (top number) should be below 120 and your diastolic pressure (bottom number) should be below 80.
- What should I do if my blood pressure is elevated?
- If your blood pressure is elevated (120-129/< 80), focus on lifestyle changes such as healthy eating, regular exercise, maintaining a healthy weight, and reducing sodium intake. Monitor your blood pressure regularly and consult your doctor.
- When is high blood pressure considered an emergency?
- A hypertensive crisis (BP ≥ 180/120 mmHg) requires immediate medical attention, especially if accompanied by symptoms like chest pain, shortness of breath, severe headache, vision changes, or difficulty speaking. Call emergency services immediately.
- How often should I check my blood pressure?
- If you have normal blood pressure, check it at least once every two years. If you have elevated blood pressure or hypertension, your doctor may recommend more frequent monitoring, potentially daily at home.
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