ASQ and Ages & Stages Questionnaires are trademarks of their respective owner. This independent calculator is not an official screening, scoring, diagnostic, or medical tool.
This ASQ Age Calculator estimates a child's chronological age and, when applicable, adjusted age for prematurity. It also shows the nearest ASQ-3 or ASQ:SE-2 questionnaire interval as a planning reference. Always verify questionnaire selection with official ASQ materials or a qualified professional.
How to use the ASQ Age Calculator
- Enter the child's date of birth.
- Enter the questionnaire administration date.
- Add the number of weeks premature, if applicable.
- Select ASQ-3 or ASQ:SE-2.
- Press Calculate ASQ Age to view the age results.
Chronological age and adjusted age
Chronological age is the time between birth and the administration date. For eligible premature children, adjusted age subtracts the number of premature weeks from chronological age. Official ASQ guidance applies this adjustment when a child is at least three weeks premature and younger than two years chronological age.
ASQ Calculator FAQs
When does this calculator adjust for prematurity?
Adjustment is applied when the child was three or more weeks premature and is younger than 24 months on the administration date.
Does this calculator diagnose a developmental delay?
No. It only calculates age and provides an interval reference. It does not administer, score, or interpret a developmental screening questionnaire.
Should I confirm the suggested ASQ interval?
Yes. Confirm the exact interval using the official ASQ calculator or administration chart, particularly near an interval boundary.