ASQ Calculator
Track child developmental milestones with standard ASQ metrics.
Input Birth Date
Enter the child's official date of birth using the calendar widget.
Screening Date
Input the date on which the questionnaire is administered (usually today).
Prematurity Adjust
If the child was born before 37 weeks gestation, specify the weeks of prematurity.
View Questionnaire
Click Calculate to output the exact chronological or adjusted age and the correct ASQ questionnaire interval.
Your Privacy Matters
All calculations run locally in your browser.
No Server Uploads
No variables or results are sent to our servers.
Auto-Cleared
Your session data is erased upon closing the tab.
Key Capabilities
Official ASQ-3 Intervals
Matches age boundaries precisely with the twenty standard Ages & Stages Questionnaire intervals (1 to 60 months).
Prematurity Adjuster
Automatically recalculates developmental age adjustments for children born prematurely (under 24 months old).
Precision Age Output
Calculates age in months and days rather than rounding roughly.
Boundary Diagnostics
Displays the acceptable date window ranges for each developmental questionnaire phase.
Private Family Records
Child dates and screening details remain confidential and process locally on your device.