Pediatric Blood Pressure Calculator

The Pediatric Blood Pressure Calculator estimates blood pressure classification and percentile based on age, height, gender, and readings. This tool helps pediatricians and parents quickly assess if a child’s BP is within a healthy range. Whether you are screening for hypertension during a checkup, monitoring growth-related changes, or evaluating a specific reading, this tool provides instant, reliable clinical insights.

Enter child's age in years (1-18)
Enter child's height in centimeters
Enter systolic BP in mmHg
Enter diastolic BP in mmHg

How Blood Pressure Percentile Is Calculated

Blood pressure percentile represents how a child’s reading compares to healthy children of the same age, sex, and height. This calculation relies on data from the "Fourth Report" rather than a simple equation to account for growth changes.

  1. First, the tool determines the child's height percentile to find where they stand growth-wise relative to peers.
  2. Next, it looks up the standard blood pressure values for that specific height, age, and gender.
  3. Finally, the entered systolic and diastolic numbers are compared to these standards to calculate the exact percentile ranking.

What Your Blood Pressure Percentile Means

Your result tells you if your child's blood pressure is higher than normal for their specific growth stage. Since blood pressure rises as children grow, looking at the percentile is the best way to understand their heart health risk.

Normal Blood Pressure

If the result is below the 90th percentile, your child’s blood pressure is healthy for their age and size. You should continue to encourage a balanced diet low in salt and regular physical activity to maintain this status.

Elevated Blood Pressure

Readings between the 90th and 95th percentiles suggest prehypertension. This is a warning sign that you should focus on lifestyle changes, such as reducing screen time and increasing aerobic exercise, to bring the numbers down.

Hypertension (Stage 1 & 2)

Results at the 95th percentile or higher indicate high blood pressure. This requires prompt medical attention to rule out underlying conditions and prevent long-term organ damage.

Important: This tool is for screening purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for accurate interpretation and guidance.

To ensure accuracy, repeat the measurement on different days and under calm conditions before making any health decisions.

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