Did Pearson discontinue their chronological age calculator?

Yes. Pearson Assessments officially stated "We no longer have a live age calculator on our site." Their calculator was discontinued and they now refer users to third-party tools. Our professional alternative uses the same Y;M;D calculation methodology.

What is Y;M;D format?

Y;M;D stands for Years;Months;Days format. For example, 6;10;4 means 6 years, 10 months, and 4 days. This is the standard format required by Pearson test manuals (WISC-V, WIAT-4, CELF-5) and most standardized assessment scoring software.

Can I use this for Pearson assessments?

Yes. Since Pearson discontinued their official calculator, our free tool uses the same calculation methodology for WISC-V, WIAT-4, CELF-5, and all Pearson assessments.

Is this the same as the Pearson chronological age calculator?

Yes, our calculator uses the same calculation method as Pearson assessments. It calculates the exact number of years, months, and days between birth date and test date, which is the standard for all Pearson clinical assessments including WISC-V, WIAT-4, and Bayley Scales.

How do I calculate chronological age for testing?

Enter the child's birth date and the test date in our calculator above. The result shows exact age in years, months, and days. This is required for standardized test administration and special education evaluations.

Is this calculator free?

Yes, completely free with no registration, signup, or hidden costs. Use it unlimited times for all your testing and assessment needs.

Can I use this for BRIGANCE assessments?

Absolutely. Our chronological age calculator works for BRIGANCE IED III, BRIGANCE Comprehensive Inventory, and all BRIGANCE early childhood screens. The calculation method is standard across all standardized assessments.

What's the difference between chronological age and biological age?

Chronological age is the actual time lived since birth, measured in years, months, and days. Biological age measures physiological aging and health. For testing and assessments, you always need chronological age, not biological age.

Do I need to adjust for prematurity?

For children under 2 years old who were born premature, some assessments require adjusted age. Calculate from the due date instead of birth date. For children over 2, use actual birth date (chronological age) per standard protocols.

Professional Chronological Age Calculator

Medical-grade accuracy for WISC-V, WIAT-4, CELF-5, and all standardized assessments. Calculate exact age in Y;M;D format (years;months;days) for test administration.

⚠️ Important: Pearson's official age calculator has been discontinued. Our professional tool provides the same accurate Y;M;D calculations for all Pearson assessments.

✓ Y;M;D format for WISC-V, WIAT-4, CELF-5, Bayley-4
✓ Replaces discontinued Pearson calculator
✓ Trusted by SLPs, school psychologists, and educators
✓ No registration or signup required
✓ Free forever

Calculate Age Now

Age Calculator

Enter date of birth and the date to calculate age on (e.g. test or assessment date). Results show chronological age in years, months, days, and total months. For adjusted age (preemies), use due date as start date.

Start Date (Birth Date):

End Date (Calculate Age On):

Your Chronological Age

Years

Months

Days

Total Months

Hours

Minutes

Total Days