Chronological Age Calculator for Speech Therapy
Age on a date you choose, written as clinical Y;M;D (for example 8;3;14), with the borrow steps shown. Unlike the Age Calculator, the reference date is not locked to today and there is no birthday countdown.
Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page opens the chronological age calculator for the professionals who need it most: speech-language pathologists, school psychologists and other pediatric assessment specialists who must report a child's exact age on the day a specific test was administered, not on today's date.
Standardized tests score performance against age-based norms, so the reporting notation matters: enter the date of birth and the test date, and the result appears in the same Y;M;D format printed on scoring forms — for example 8;3;14 for 8 years, 3 months and 14 days — calculated with the standard borrow method rather than a rounded or approximate figure.
The borrow steps are shown in full underneath the result, so you can verify the day-borrow and month-borrow arithmetic against your own scoring sheet before it goes into a report. If you only need someone's everyday age as of today, this site's general age calculator gives that in a simpler, casual format.
Example. Born 2020-01-15 and measured on 2024-03-20, the clinical notation is 4;2;5.
Limit. The reference date must be on or after the birth date, and hours are not counted.