Pearson Chronological Age Calculator
Pearson’s official age calculator has been discontinued. Their page now redirects to a generic third-party date-duration tool that doesn’t output the Y;M;D format their own manuals require. This dedicated calculator gives you that exact notation, front and center, ready to copy into a protocol or Q-global.
Which Pearson Instruments This Covers
This calculator produces the exact Y;M;D chronological age format used across every Pearson assessment scored by age at time of testing:
- WISC-V and WPPSI-IV (cognitive/IQ testing)
- WAIS-IV (adult cognitive assessment)
- WIAT-4 (academic achievement)
- CELF-5, PLS-5, PPVT-5, EVT-3 (speech and language)
- GFTA-3 (articulation, uses Years;Months;Days)
- Bayley-4 (uses Years;Months;Days, with adjusted age under 24 months)
Selecting the wrong age band produces an invalid standard score. When a manual says “age at time of testing,” it means age to the day, not rounded, not estimated.
Does Pearson still run a chronological age calculator?
No. Pearson’s age calculator page states they no longer host a live calculator and links out to a third-party date-duration tool that doesn’t produce Y;M;D output.
What format does this give me for GFTA-3 or Bayley-4?
Years;Months;Days. Both instruments’ manuals score by the full three-unit breakdown, not just years and months.
Is this a different calculator from your other tools?
Yes. This one is built specifically to surface the Y;M;D notation Pearson manuals and Q-global expect, up front and copyable. For general-purpose date math, use our main chronological age calculator.