Pearson Assessment Tools
Pearson Age Calculator
A free Pearson age calculator for clinicians who need exact chronological age for WPPSI-IV, Bayley-4, WISC-V, CELF-5, GFTA-3, PPVT-5, and other Pearson assessments. Uses the same ASHA calculation method Pearson scoring manuals require — no Q-global subscription needed.
Looking for an age calculator Pearson-compatible? This tool produces the same years, months, and days result as Q-global using the identical ASHA 30-day borrowing method.
Open the Free Pearson Age Calculator
Enter the child's birth date and test date. The Pearson age calculator returns exact age in years, months, and days — copy it straight into your protocol form.
Calculate Age Now →Pearson Assessments That Require Exact Age
Every Pearson norm-referenced assessment uses chronological age to select the correct norm table. A one-day error can shift a child into a different age band and produce an incorrect standard score.
Wechsler Preschool and Primary Scale of Intelligence
Age range: 2;6 – 7;7
Age required to the day for norm table lookup
Wechsler Intelligence Scale for Children
Age range: 6;0 – 16;11
Years and months used; days recorded on cover sheet
Bayley Scales of Infant and Toddler Development
Age range: 16 days – 42;15
Age in months and days; corrected age for premature infants
Clinical Evaluation of Language Fundamentals
Age range: 5;0 – 21;11
ASHA 30-day method required for cross-month calculation
Goldman-Fristoe Test of Articulation
Age range: 2;0 – 21;11
One-month norm bands — day-level accuracy matters
Peabody Picture Vocabulary Test
Age range: 2;6 – 90+
Age in years and months; full date recorded for report
Why This Pearson Age Calculator Produces the Same Result
Pearson assessment manuals specify the ASHA 30-day borrowing method for calculating chronological age. This means when the child's birth day is larger than the test day, you borrow one month and treat it as exactly 30 days — not the actual number of days in that month.
This Pearson age calculator applies the same ASHA 30-day convention automatically, so the result matches what Pearson's Q-global platform would produce. You can use it as a standalone Pearson age calculator without needing a Q-global login.
Example — CELF-5 Administration
Birth date
2019 / 09 / 15
Test date
2026 / 06 / 08
Pearson age calculator result
6 years, 8 months, 23 days → Age band: 6;8
How to Use This Pearson Age Calculator
Enter the child's birth date
Select the birth month, day, and year. The Pearson age calculator accepts any date back to 1900.
Set the test administration date
Enter the exact date you administered the assessment — not the report date. If subtests spanned multiple sessions, use the date of each session.
Copy the result to your protocol form
The calculator returns exact age in years, months, and days. Use the years;months value (e.g., 6;8) to look up norms in the Pearson scoring table, and record the full date on the cover sheet.
Frequently Asked Questions
Does Pearson have a free age calculator?
Pearson Clinical provides an age calculator inside Q-global, but it requires a paid subscription. This Pearson age calculator is free and produces the same result using the same ASHA calculation method — no account or login required.
Is this calculator compatible with Pearson assessment protocols?
Yes. This Pearson age calculator uses the ASHA 30-day borrowing method, which is the standard Pearson assessment manuals specify for WPPSI-IV, Bayley-4, WISC-V, CELF-5, GFTA-3, and PPVT-5. The result is in the years, months, days format Pearson scoring tables require.
What Pearson assessments require exact chronological age?
All major Pearson norm-referenced assessments require exact age to the day: WPPSI-IV, WISC-V, WAIS-IV, Bayley-4, NEPSY-II, CELF-5, GFTA-3, PPVT-5, and EVT-3. Age is used to select the correct norm table, so a one-day error can shift the standard score.
What is the ASHA 30-day method that Pearson uses?
When the child's birth day is larger than the test day, one month is borrowed and treated as exactly 30 days before subtracting. This ASHA convention ensures consistent results and is explicitly required by Pearson scoring manuals.
What date should I use as the reference date for a Pearson assessment?
Use the date the test was administered, not the report date. For assessments spanning multiple sessions, Pearson manuals require the date of each individual session. Always record the full month, day, and year.
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