Standardised assessments are often expressed in percentiles. These map onto to descriptors which are often used in reports.

Use the tool below to convert a percentile into a descriptor.

The tool code was generated by Chat GPT 3.5 (Date: 13/06/2024 for Percentile Rank Tool and 12/06/24 for Age calculator) https://chatgpt.com with edits by Dr Sean Pert.

Warning: Please ensure that you check any result prior to quoting: no responsibility for errors will be accepted.

Age Calculator

Age Calculator





Results:

Date of Birth to Today:

Date of Birth to Assesment Date:

We do not collect any data or track your activity on this website.


Normal Distribution Curve: Percentile Rank to Score Range

Normal Distribution Curve: Percentile Rank to Score Range

We do not collect any data or track your activity on this website.


No computer coding can replace clinical decision-making. Please take this only as a guide and use a wide range of clinical measures and other tools to arrive at a diagnosis, and where indicated, a treatment plan.

Bilingual children / Children who speak languages other than English (LOTE)

Do NOT quote ANY score based on monolingual English children, including:
  • age equivalents
  • percentiles
  • percentile ranks
  • standard scores
  • Z scores
  • Standard deviations from the mean

This is because normative data based on the responses of monolingual English children would provide an unfair comparison and lead to misdiagnosis.

We do not collect any data or track your activity on this website.