Pediatric Percentile Calculator for Height, Weight, BMI, and Blood Pressure

Instructions: Enter the height (feet/inches, centimeters, or inches), the weight (kilograms or pounds) and the systolic and
diastolic blood pressures. Leave either Age or DOB blank. If both are entered, the system will use the Age value and
not DOB.

Click "Recalc". The z-scores and percentiles will appear in blue.

Use this for those 20 years of age and less.

Assessment Date
SBPmm Hg
DBPmm Hg


Out of Range - The values you entered are out of reasonable range. For the Pediatric Calculator, the range is 2 years to 20 years of age.
Height, weight, and BMI z-scores and percentiles are based on sex and age in months. Source:

Blood pressure z-scores and percentiles are based on sex, height z-score, and age in years calculated from age in months
without rounding. Details of the calculation are available in Appendix B of the NHLBI's Fourth Report on the Diagnosis,
Evaluation, and Treatment of High Blood Pressure in Children and Adolescents, May 2005:

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/quesgenadmin/public_html/BMIPedsCalc.php on line 436

Software utilities by Mike Jarrett ( and Michael Kohn (
Disclaimer: Software is provided on an as-is basis and no warranty is made of any kind. Calculations are believed
accurate but should be verified by the user.
©2015 QuesGen Systems, Inc. Revised March 27, 2013