Pearson Age Calculator

Pearson record forms have three date rows — test date, date of birth, and age — and the age row expects years;months.days. A student who is 10 years, 11 months and 17 days old is recorded as 10;11.17. The same figure is sometimes written with semicolons throughout (10;11;17); the numbers are identical.

That third component is not decoration. Norm tables are banded, and where the bands are narrow — the whole of early childhood, and the age boundaries where a battery changes — the days are what put the examinee in the right band. Recording only 10;11 discards the information a reviewer would need to check your work.

What the days never do is round the month up. For norm-table lookup on the Wechsler-family and Pearson language batteries, complete years and complete months are what select the row. Nearest-month rounding belongs to a different family of instruments — the BRIGANCE Screens being the clearest example — and applying it here would move the score.

A student born October 3, 2015 and tested on September 20, 2026:

• Age at testing: 10 years, 11 months, 17 days
• Record on the form as: 10;11.17
• Norm table lookup: the band containing 10;11 — the partial month is not rounded up
• If an instrument asked for a rounded age instead: 11;0, because 17 days is 15 or more

Enter these exact dates above to reproduce the result. The arithmetic follows the documented calculation method, including month-end and leap-day conventions.

Each of these has a page that pre-selects the age format the instrument records, checks the computed age against the publisher's published range, and states whether corrected age applies:

Instruments from other publishers — PRO-ED, WPS, Riverside, Curriculum Associates, Brookes, MHS — are in the full instrument reference.

A lot of the traffic on this phrase is people who want the Q-global date arithmetic without opening Q-global — a quick, correct age while a record form is in front of them. That is what this page is. It is not affiliated with Pearson, it does not connect to any scoring platform, and it never sends a date of birth anywhere: the calculation runs entirely in your browser.

What it does that a generic age calculator does not:

• Outputs the years;months.days string a record form asks for, not a paragraph
• Copies the bare string to your clipboard with one click
• Shows complete months and the nearest-month rounded figure side by side, so you can satisfy whichever convention the manual specifies
• Warns when the computed age falls outside an instrument's published range
• Offers corrected age for children born preterm on the instruments where it applies

• Use the actual test date, not today's date, if testing happened earlier
• Recompute from the birth date rather than copying an age forward from a previous report — the earlier age was correct on a different day
• Record all three components (years;months.days) even when only years;months is used for the lookup
• Check whether your instrument truncates or rounds — most truncate, a minority round to the nearest month
• For a child born preterm, decide and document whether the score is computed from chronological or corrected age

Need every format at once, or an instrument not listed above? Use the assessment age calculator, the Brigance age calculator for rounded ages, or the age in months calculator.