Pearson Chronological Age Calculator

Pearson Clinical and Pearson Assessments publish many widely-used standardized tests that require precise chronological age calculations. The age must be calculated exactly from the test date and expressed in the years;months format for accurate norm table lookups.

This calculator is designed specifically for psychologists, educators, and clinicians who administer Pearson assessments and need a quick, accurate way to calculate testing age.

This calculator is useful for calculating age for assessments including:

• WISC-V: Wechsler Intelligence Scale for Children
• WAIS-IV: Wechsler Adult Intelligence Scale
• WPPSI-IV: Wechsler Preschool and Primary Scale
• CELF-5: Clinical Evaluation of Language Fundamentals
• WIAT-4: Wechsler Individual Achievement Test
• PPVT-4: Peabody Picture Vocabulary Test

To ensure accurate scoring on Pearson assessments:

• Always double-check the birth date before testing
• Use the exact test date, not today's date if testing occurred earlier
• Round down partial months (don't round up)
• Verify the format required by your specific assessment manual