Brigance Age Calculator
The BRIGANCE Early Childhood Screens III use an age-specific Data Sheet chosen from the child's rounded chronological age. This page follows the age steps in the publisher's technical manual. It doesn't include any screening items or scores.
Before you start
Method : Manual's date subtraction, prematurity chart and 15-day rounding, then Screens III age level.
Checked : Steps read from the Screens III Technical Manual on 2026-10-05; tests reproduce the manual's three worked examples and level edges.
Review : not reviewed by Curriculum Associates or an early-childhood specialist. Not affiliated with BRIGANCE; no screening content is reproduced.
Your entries stay in this browser tab; nothing is sent or stored.
How to Use This Calculator
- Enter the birth date and the screening date.
- Enter weeks born early (0 if on time).
- Press Calculate.
Methodology & assumptions
Edition: BRIGANCE Early Childhood Screens III (2013); steps from the technical manual (checked 2026-10-05).
1) Subtract birth date from screening date with 30-day/12-month borrowing. 2) Under 24 months and born ≥ 4 weeks early: subtract the months and days from the chart. 3) Round: 15+ days adds a month. 4) Age level: Infant 0–11 months, Toddler 12–23, then Two- to Five-Year-Old by year, First Grade 6 years 0 months to 7 years 6 months.
Worked examples
Manual example: screened February 8, 2016, born May 23, 2015 → 8 months 15 days → rounded 9 months (Infant).
Manual example, 5 weeks early: 8 m 15 d − 1 m 7 d = 7 months 8 days → 7 months.
Manual example: screened March 7, 2016, born May 22, 2010 → 5 years 9 months 15 days → 70 months (Five-Year-Old / Kindergarten).
Understanding your result
The age level picks the Data Sheet only. Scores and any referral decisions belong with trained examiners using the official materials.
Sources & further reading
- Curriculum Associates. BRIGANCE Screens III Technical Manual (B. French, 2013), Chapter 3 and Table 3-1.Borrow 30 days per month and 12 months per year; round up the month at 15+ days; for infants and toddlers correct for prematurity if born 4+ weeks early (weeks → months and days chart) before rounding; age levels Infant through First Grade (to 7 years 6 months). Checked October 5, 2026.
- Curriculum Associates. BRIGANCE Rounded Chronological Age Calculator.Official calculator; use it to confirm. Checked October 5, 2026.
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