Developmental Milestone Tracker

Educational monitoring only. This checklist cannot replace standardized, validated developmental screening. It does not score, predict, diagnose, or determine developmental delay.

If a milestone is missing, a child loses skills, or you have any concerns, contact your child's pediatrician and ask about developmental screening. Do not wait for a checklist result.

All 159 milestones across 12 age checklists are mapped to CDC pages, accessed 7 October 2026. Translated text is this site's concise rendering, not an official CDC translation. Ages identify CDC checklists, not a personalized schedule.

CDC checklist age

Check only what you observed. An unchecked box is not a failure. No totals or comparison are calculated.

2 months

CDC age checklist source · 2 months

Social / emotional

Calms down when spoken to or picked upCDC
Looks at your faceCDC
Seems happy to see you when you walk up to herCDC
Smiles when you talk to or smile at herCDC

Language / communication

Makes sounds other than cryingCDC
Reacts to loud soundsCDC

Cognitive: learning, thinking, problem-solving

Watches you as you moveCDC
Looks at a toy for several secondsCDC

Movement / physical development

Holds head up when on tummyCDC
Moves both arms and both legsCDC
Opens hands brieflyCDC

Optional observation dateOptional notes for this age / questions for the pediatrician

Records stay in this tab's memory and disappear on reload or close. No child name or birth date is needed. Download only if you want a local text copy.

CDC · CDC age checklist source

A QUICK WALKTHROUGH

How to use this tool

Choose a CDC checklist age.
Mark observations and add optional notes.
Read the linked CDC source and discuss concerns with a pediatrician.

CDC age checklist source

Can this identify a developmental delay?

Educational monitoring only. This checklist cannot replace standardized, validated developmental screening. It does not score, predict, diagnose, or determine developmental delay.

Optional notes for this age / questions for the pediatrician

Records stay in this tab's memory and disappear on reload or close. No child name or birth date is needed. Download only if you want a local text copy.

GOOD TO KNOW

Common questions

Can this identify a developmental delay?

No. Discuss missing milestones, lost skills or other concerns with a pediatrician and ask about standardized developmental screening.

Developmental Milestone Tracker