Assessment Age Calculator

Chronological age for psychoeducational assessments. 30-day months. Year / Month / Day output.

A simple, fast chronological age calculator built for school psychologists and assessment professionals. Enter a test date and date of birth to instantly calculate the student's exact chronological age in the standard Year / Month / Day format used on official assessment forms. Features: - 30-day month convention used by major assessment manuals (WISC, WIAT, Vineland, and others) - Clean Year / Month / Day output matching official form formatting - For students under 6 years old, total months are also displayed - Dates entered in Year / Month / Day order for consistency - No internet connection required — works completely offline - No data collected or stored assessment age calculator!