How to read the columns
Age range on this table is the range people usually associate with the instrument, not a lock inside the calculator. The widget will subtract any two valid dates. You still should not score a test outside the ages the manual allows. Rounding is the part that changes the number you write down. “Nearest month” means leftover days of 16 or more bump the month and the day field becomes zero. “Exact age” keeps the days. Format is how the line is printed: Y:M versus a three-part Y;M;D. A colon and a semicolon are both in use on real forms. Copy the separator your record form prints, or use the copy button on the matching calculator.
General test age is the row for “I need the switch.” It is the same borrowing engine with the mode left in your hands. It is the right row when the matrix does not name your battery. It is the wrong row if you wanted ChronoCalc to look up a norm. We do not have norms. Publisher names identify a formatting habit documented on the methodology page. They are not affiliations.
Rows that are easy to mix
WISC and the Pearson WISC-V / WAIS-IV row overlap because the WISC-V age line is a Wechsler convention. Use one of them, not both, for a single protocol, and do not paste that rounded month onto a BRIGANCE screen from the same morning. BRIGANCE stays exact. Super Duper’s row floors to the completed month: leftover days are dropped and never round the month up. It is aimed at speech-language forms that want years and months only. CELF-5 has its own page, CELF-5 age, and is not a duplicate of the Wechsler round unless the edition you are holding says so. Check the book.
Corrected age is absent from the table on purpose. It is not a publisher format. It adjusts the chronological span for prematurity before any of these formats are applied. Do that on the corrected age calculator, then format if the form still wants Y;M;D. Dates entered on any linked calculator remain in the browser.
Read the table from the form backward. Find the words on the record form first — exact days, nearest month, or a semicolon age — and only then pick a row. The age-range column is a reminder of who the test is for, not a validation that your examinee is in range. If the child is outside that range, the calculator will still subtract, and the score will still be the wrong thing to file. When nothing in the table matches, use general test age, keep the exact span, and follow the manual’s rounding note by hand. The wizard asks the same question in a shorter path if you do not want to scan rows. Two rows can share a rounding rule and still belong to different tests. Do not merge their age lines in the report. A colon and a semicolon are different characters. Match the form, not the row that feels closest. Copy the separator the record form prints. Do not invent a third format between them.