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Calcimator

Pediatric Blood Pressure Calculator

Classify pediatric blood pressure by percentile using AAP 2017 guidelines adjusted for age, sex, and height.

Inputs

mmHg
mmHg
years
%ile

Results

Systolic Percentile

29.5%ile

Diastolic Percentile

45.5%ile

Classification

Normal

How to Use This Calculator
  1. Measure blood pressure with an appropriately sized cuff after the child has been resting for at least 5 minutes.
  2. Enter Systolic BP and Diastolic BP readings in mmHg.
  3. Enter the child's Age in years (1–17), Sex (1 = Male, 2 = Female), and Height Percentile from the growth chart.
  4. The calculator computes Systolic and Diastolic percentiles using AAP 2017 normative data adjusted for age, sex, and height.
  5. Review the Classification — Normal, Elevated, Stage 1, or Stage 2 Hypertension — and follow AAP confirmation and management guidelines.

How the result changes with Systolic BP

Systolic BPSystolic PercentileDiastolic PercentileClassification
650.1%ile45.5%ileNormal
10343.5%ile45.5%ileNormal
14899.9%ile45.5%ileStage 2 Hypertension
18599.9%ile45.5%ileStage 2 Hypertension

What each input means

Systolic BP
Systolic blood pressure reading in mmHg.
Diastolic BP
Diastolic blood pressure reading in mmHg.
Age
Child's age in years (1-17; use adult charts for 18+).
Sex
1 = Male, 2 = Female — normative values differ by sex.
Height Percentile
Child's height percentile (from growth chart) — BP norms vary by height.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Systolic BP = 100, Diastolic BP = 60, Age = 8, Sex = 1 = 5 input(s) provided
  2. Calculate Systolic Percentile
    Systolic Percentile
    29.5 = 29.5
  3. Calculate Diastolic Percentile
    Diastolic Percentile
    45.5 = 45.5

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