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Speech, OT, and PT teams use it to triage referrals.
Home visitors, Early Head Start, and IFSP teams.
Two different ways to describe a baby's age — and the right one depends on whether your child was born early.
The time elapsed since your child was born — regardless of how many weeks pregnant you were at delivery. Use chronological age for vaccinations, age-based activities, and after 24 months for almost every milestone reference.
Open Baby Age CalculatorChronological age minus the number of weeks your baby was born early. Use corrected age when interpreting growth charts, developmental milestones, and ASQ-3 screening until your child is 24 months old.
Open Corrected Age CalculatorEach ASQ-3 domain contains six items scored 0 (Not Yet), 5 (Sometimes), or 10 (Yes). The calculator sums the six items per domain and compares each total to the official age-interval cutoffs published by the Ages & Stages Questionnaire authors. Scores above the monitoring cutoff are typical, between monitor and refer suggest re-screening, and at or below the refer cutoff prompt a clinician conversation.
All math runs locally in your browser — nothing is stored or transmitted. Read the full methodology, references, and review process for transparency on every cutoff we use.
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Evidence-based explainers from our editorial team.
Learn how to score the Ages & Stages Questionnaire (ASQ-3) by hand, interpret the cutoffs, and decide what to do next.
Read guideHow to calculate corrected (adjusted) age for premature infants, when to stop using it, and how it changes screening, feeding, and milestone expectations.
Read guideWhat it means to be in the 25th, 50th, or 90th percentile — and why the trend matters far more than any single number.
Read guide
1–66 monthsScore the Ages & Stages Questionnaire (ASQ-3) instantly across all five domains. Free, accurate, and aligned with official cutoffs.
0–6 yearsConvert your baby's date of birth to exact age in years, months, weeks, and days. Perfect for milestones, vaccinations, and pediatric visits.
Preterm · 0–24 monthsCalculate adjusted (corrected) age for babies born preterm. Used to interpret growth, milestones, and screening tools accurately until 24 months.
0–24 monthsPlot your baby's weight and length against WHO Child Growth Standards. Get percentiles and z-scores instantly.
2–20 yearsCalculate Body Mass Index for children and teens with CDC age- and sex-specific percentile interpretation.
0–12 yearsHow much sleep does your child need? Get age-based total sleep hours, suggested bedtimes, and nap patterns based on AAP/AASM guidance.
The Ages and Stages Questionnaire (ASQ) is a reliable screening tool used to identify potential developmental delays in children from birth to 5½ years old.
Track your child's development milestones and identify areas that may need attention or support.
Assess children's developmental progress in early childhood education settings and plan appropriate interventions.
Healthcare providers and therapists use ASQ for early detection and intervention planning.
Learn how to properly score ASQ questionnaires and interpret the results for better understanding of child development.
Fill out the age-appropriate ASQ-3 questionnaire by observing your child's abilities and behaviors.
Assign points: Yes = 10 points, Sometimes = 5 points, Not Yet = 0 points for each question.
Add up scores for each of the five developmental domains: Communication, Gross Motor, Fine Motor, Problem Solving, and Personal-Social.
Use our calculator to automatically compare your child's scores to age-appropriate cutoff scores and get instant interpretation.
If a Communication domain has 6 questions and your child scores: Yes, Sometimes, Yes, Not Yet, Yes, Sometimes
Total: 10+5+10+0+10+5 = 40 points
Our online ASQ calculator provides instant, accurate results with a user-friendly interface designed for parents and professionals.
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Based on official ASQ-3 scoring guidelines and cutoff scores for reliable results.
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Get answers to common questions about ASQ assessments and our calculator tool.
ASQ (Ages and Stages Questionnaire) is a developmental screening tool that helps identify children who may need further evaluation or early intervention services. It covers five key developmental areas and is used by healthcare professionals, educators, and parents to track child development milestones.
ASQ-3 has been extensively validated and shows 85% accuracy in identifying children who need further evaluation. However, it's a screening tool, not a diagnostic test. Always consult with healthcare professionals for comprehensive developmental assessments.
Each ASQ item is scored as: Yes = 10 points, Sometimes = 5 points, Not Yet = 0 points. Add up the points for each domain (Communication, Gross Motor, Fine Motor, Problem Solving, Personal-Social), then compare to the cutoff scores for your child's age interval.
A low score indicates your child may benefit from further evaluation by a healthcare professional. It doesn't mean there's definitely a problem – early intervention can make a significant difference in developmental outcomes. Contact your pediatrician to discuss the results and next steps.
ASQ assessments are typically done at specific age intervals: 2, 4, 6, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 27, 30, 33, 36, 42, 48, 54, and 60 months. Your healthcare provider will recommend the appropriate schedule based on your child's needs.
Yes, our calculator processes all data locally in your browser. We don't store, track, or share any information you enter. No personal data is collected, and no login is required to maintain your privacy and security.
Stay informed with expert insights on child development and ASQ assessments.
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