Blood Pressure Calculator
Use this calculator to determine your Mean Arterial Pressure (MAP), Pulse Pressure, and Blood Pressure Category based on your systolic and diastolic readings.
Results:
Enter your blood pressure readings and click "Calculate" to see your results.
Understanding Your Blood Pressure: A Comprehensive Guide
Blood pressure is a vital sign that measures the force your blood exerts against the walls of your arteries as it flows through your body. It's typically expressed as two numbers: systolic and diastolic pressure. Understanding these numbers and what they mean is crucial for maintaining good cardiovascular health.
What is Systolic and Diastolic Blood Pressure?
- Systolic Blood Pressure: This is the top number in your blood pressure reading. It represents the pressure in your arteries when your heart beats and pumps blood out. A healthy systolic reading is generally below 120 mmHg.
- Diastolic Blood Pressure: This is the bottom number. It represents the pressure in your arteries when your heart rests between beats, filling with blood. A healthy diastolic reading is generally below 80 mmHg.
Both numbers are important. High readings in either can indicate a risk for heart disease, stroke, and other health problems.
Mean Arterial Pressure (MAP)
While systolic and diastolic pressures are commonly known, Mean Arterial Pressure (MAP) provides a more comprehensive picture of the average pressure in your arteries during one cardiac cycle. It's considered a better indicator of organ perfusion (blood flow to organs) than systolic pressure alone.
The formula for calculating MAP is:
MAP = Diastolic Pressure + 1/3 * (Systolic Pressure - Diastolic Pressure)
A normal MAP is typically between 70 and 100 mmHg. A MAP below 60 mmHg may indicate insufficient blood flow to vital organs, while a consistently high MAP can put strain on your heart and blood vessels.
Pulse Pressure
Pulse pressure is simply the difference between your systolic and diastolic blood pressure. It reflects the elasticity of your arteries and the force of your heart's contraction.
The formula for calculating Pulse Pressure is:
Pulse Pressure = Systolic Pressure - Diastolic Pressure
A normal pulse pressure is usually around 40 mmHg. A high pulse pressure (above 60 mmHg) can indicate stiffening of the arteries, which is a risk factor for cardiovascular disease, especially in older adults. A very low pulse pressure (below 20 mmHg) can sometimes indicate poor heart function.
Blood Pressure Categories
The American Heart Association (AHA) and American College of Cardiology (ACC) define blood pressure categories to help assess risk:
- Normal: Systolic less than 120 mmHg AND Diastolic less than 80 mmHg
- Elevated: Systolic 120-129 mmHg AND Diastolic less than 80 mmHg
- Hypertension Stage 1: Systolic 130-139 mmHg OR Diastolic 80-89 mmHg
- Hypertension Stage 2: Systolic 140 mmHg or higher OR Diastolic 90 mmHg or higher
- Hypertensive Crisis: Systolic higher than 180 mmHg AND/OR Diastolic higher than 120 mmHg (Requires immediate medical attention)
How to Use the Calculator
Our Blood Pressure Calculator simplifies these calculations for you:
- Enter Systolic Blood Pressure: Input the top number from your blood pressure reading into the "Systolic Blood Pressure (mmHg)" field.
- Enter Diastolic Blood Pressure: Input the bottom number into the "Diastolic Blood Pressure (mmHg)" field.
- Click "Calculate Blood Pressure": The calculator will instantly display your Mean Arterial Pressure (MAP), Pulse Pressure, and your Blood Pressure Category.
Important Disclaimer
This calculator is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider for any health concerns or before making any decisions related to your health or treatment. Blood pressure readings can fluctuate, and a single reading does not define your overall health status.