Blood Pressure Calculator

Blood Pressure & MAP Calculator

Assess your blood pressure category and calculate Mean Arterial Pressure (MAP).

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mmHg

Understanding Your Blood Pressure Reading

Blood pressure is measured using two numbers: Systolic and Diastolic. Systolic blood pressure measures the pressure in your arteries when your heart beats. Diastolic blood pressure measures the pressure in your arteries when your heart rests between beats.

Mean Arterial Pressure (MAP)

Mean Arterial Pressure (MAP) is considered the average pressure in a patient's arteries during one cardiac cycle. It is often considered a better indicator of perfusion (blood flow) to vital organs than systolic blood pressure alone. A MAP of at least 60 mmHg is generally required to sustain the organs of the average person.

The MAP formula is: MAP = [Systolic + (2 × Diastolic)] / 3

Blood Pressure Categories

Category Systolic (mmHg) Diastolic (mmHg)
Normal Less than 120 Less than 80
Elevated 120 – 129 Less than 80
Hypertension Stage 1 130 – 139 80 – 89
Hypertension Stage 2 140 or higher 90 or higher
Hypertensive Crisis Higher than 180 Higher than 120

Pulse Pressure

Pulse pressure is the difference between your systolic and diastolic blood pressure (Systolic – Diastolic). A pulse pressure greater than 60 mmHg is often considered a risk factor for cardiovascular disease, especially in older adults.

Disclaimer: This tool is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

function calculateBloodPressure() { var systolic = parseFloat(document.getElementById('systolic_val').value); var diastolic = parseFloat(document.getElementById('diastolic_val').value); var resultArea = document.getElementById('bp_result_area'); var categoryDisplay = document.getElementById('category_display'); var statsDisplay = document.getElementById('stats_display'); if (isNaN(systolic) || isNaN(diastolic) || systolic <= 0 || diastolic = 180 || diastolic >= 120) { category = "Hypertensive Crisis (Seek Emergency Help!)"; bgColor = "#721c24"; } else if (systolic >= 140 || diastolic >= 90) { category = "Hypertension Stage 2"; bgColor = "#c82333"; } else if ((systolic >= 130 && systolic = 80 && diastolic = 120 && systolic <= 129) && diastolic < 80) { category = "Elevated Blood Pressure"; bgColor = "#ffc107"; textColor = "#000"; } else if (systolic < 120 && diastolic < 80) { category = "Normal Blood Pressure"; bgColor = "#28a745"; } else { // Handle cases where diastolic is high but systolic is low category = "Consult Healthcare Provider"; bgColor = "#17a2b8"; } // Apply styles and update content resultArea.style.display = "block"; resultArea.style.backgroundColor = bgColor; resultArea.style.color = textColor; categoryDisplay.innerText = category; statsDisplay.innerHTML = "Mean Arterial Pressure (MAP): " + mapValue.toFixed(1) + " mmHg" + "Pulse Pressure: " + pulsePressure + " mmHg"; }

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