Forgotten Diseases Research Foundation

Calculator for growth in children with syndromes

The calclulator on this page will return a percentile and a standard deviation for height of people with ataxia-telangiectasia. The data for this calculator was gathered from records at the Johns Hopkins A-T Clinical Center, Baltimore, and is based on measurements from 400 people with the classic form of A-T from birth to adulthood. (1)

Please provide some information about yourself or your child. We don't record or keep any information you enter here. The categories for Mixed Race and Race/Ethnicity not on this list" use data from the World Health Organization.

Basic information





Select syndrome and measurement (height, weight, BMI, head circumference) from the list below. For convenience, the CDC's data for the general population are included with all results.

Important notes:

  • You can enter 1 year, 1 month, or 13 months.
  • Entering 1.25 years won't work.


  • Enter 1 to 5 measurements at once.
  • Please include zeros, as in 0 years, 8 months or 2 years, 0 months.
  • For size at birth, write 0 years, 0 months.
  • In measurements, write 1/2 as 0.5
  • In measurements, write 1/4 as 0.25
  • In measurements, write 3/4 as 0.75




  Years:     Months:                  cm  
  Years:     Months:              
  Years:     Months:              
  Years:     Months:              
  Years:     Months:              


  1. 1. Natale V et al. (2020) Growth in Ataxia Telangiectasia. Orphanet J Rare Dis Submitted.

Page last modified on 13 September 2020.