ASQ Calculator — Quick Age & Score Helper

The ASQ Calculator is a practical online tool for parents, caregivers, and professionals who use the Ages & Stages Questionnaires (ASQ-3 and ASQ:SE-2). It helps you quickly compute a child’s chronological age and adjusted age (for babies born prematurely), select the correct ASQ questionnaire interval, and compute an adjusted score when items are missing. This makes screening faster and reduces errors when choosing or scoring the correct form.

Why Use an ASQ Calculator?

Choosing the right ASQ interval is essential for accurate developmental screening. Instead of manually converting birthdates or worrying about weeks premature, this tool provides dependable results in seconds. It’s especially useful in clinics, early-childhood programs, or when completing ASQ forms at home. Many organizations recommend using an age calculator to ensure you select the proper questionnaire and to prorate scores when some items are unanswered.

What the Tool Does

1. Chronological age: Calculates exact age from birth date to the questionnaire administration date.
2. Adjusted age: Subtracts weeks premature (if applicable) to produce adjusted age in months and days.
3. Interval selection: Uses the adjusted age to recommend the correct ASQ-3 or ASQ:SE-2 interval (for example 2, 4, 6, 8, 9, 12 months, etc.).
4. Adjusted score (prorating): If questionnaire items are omitted, the calculator prorates the total score so you can compare it with published cutoffs.

How to Use

Enter the child’s date of birth, the date you completed the questionnaire, and the number of weeks premature (if any). If scoring, enter the total raw score and the number of omitted items — the tool will calculate a prorated adjusted score. Use the recommended interval to pick the correct ASQ form and follow local guidance for referrals.

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Important Note

This calculator is a convenience tool and is intended to support screening workflow. Always follow the ASQ user guides and local protocols for assessment, interpretation, and referral. For official apps and resources, see the ASQ developer pages and Brookes Publishing resources.