Age calculator for IEP paperwork
Compute the exact chronological age needed for IEP eligibility and re-evaluation paperwork — one student, or a whole caseload in one pass. Enter date of birth and the evaluation date to get years; months; days ready for the report.
Corrected age for prematurity
Corrected age subtracts the weeks born early from the term due date. Many clinicians stop correcting at 24 months (AAP) — some protocols use 36. Follow your own protocol; this is a labelled default, not a rule.
How we calculate this
Score a whole caseload at once. Rows are saved in this browser only — no accounts, nothing uploaded.
| Student | Date of birth | Test date | Age |
|---|
- Caseload mode — a whole review window in one pass.
- Report-ready Y;M;D to paste into evaluations and IEPs.
- Private — student dates of birth stay in your browser.
Chronological age for IEP paperwork
Writing an evaluation report or IEP means recording the student's age accurately and, usually, doing it for several students at once during a review window. This tool gives you the exact chronological age each assessment and eligibility decision depends on, and lets you run a whole caseload without re-entering a test date for every child.
Why exact age matters for IEP eligibility
The norm-referenced measures behind an eligibility decision — cognitive, academic, language, adaptive — convert raw scores using the student's exact age on the day of administration. Age bands are narrow, so an age that is off by even a few days can pull the wrong norm table and change a standard score, a percentile, and ultimately the eligibility finding. Computing the precise years; months; days from the date of birth protects the validity of everything that follows.
Score a whole caseload for a review window
When a cohort of annual reviews or triennials comes due together, Caseload mode lets you enter each student's label and date of birth, apply one shared evaluation date (or a per-student date when children were tested on different days), and copy the entire table straight into your report or spreadsheet. It turns an afternoon of one-at-a-time lookups into a single pass.
Rounding follows the assessment, not the paperwork
There is no single IEP rounding rule to apply across the board. Use whatever convention the specific test you administered specifies — exact age, years and months, or rounding the month at 15 days — and record it that way. The tool offers all three modes, but the authority is each assessment's own manual; it never assumes a rule the manual doesn't state.
Student data stays private
Everything runs client-side. Caseload rows live only in your browser's local storage — no accounts, no upload, nothing sent to a server. That is important when the data is students' dates of birth, and it means clearing your browser storage removes the roster entirely.
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Age for IEP paperwork — FAQ
How do I calculate a student's age for an IEP?
Enter the student's date of birth and the evaluation or meeting date; the calculator returns the exact age in years; months; days. Record that value on the evaluation report and IEP so the age matches the date the assessments were administered — not the date the paperwork is written.
What age is recorded on an IEP or evaluation?
The chronological age at the time of testing or the eligibility meeting, expressed in years; months; days (for example 8;2;10). Because that figure drives the norm tables behind each assessment, it should be the exact age on the administration date, computed from the date of birth.
Is chronological age the same as eligibility age?
They are usually the same number, but they answer different questions. Chronological age is simply the elapsed time from birth to the test date. Eligibility for a category or program may then apply that age against your state or district's age criteria — the age you compute here is the input those criteria use, not a substitute for them.
Can I compute my whole caseload at once?
Yes. Switch to Caseload mode, add a row per student with a label and date of birth, set one shared evaluation date or a per-student date, and copy the whole table into your report or spreadsheet. It is built for review windows where a dozen students come due together.
Is my students' data private?
Yes. Everything runs client-side in your browser, and caseload rows are stored only in your browser's local storage — nothing is uploaded or sent to a server. That matters when the data includes students' dates of birth; clearing your browser storage removes it.