4–6 Month Milestones
Baby milestones from 4–6 months focus on rolling, sitting with support, grasping objects, babbling, and growing social awareness.

Keepsies offers pre-made developmental milestone lists by age, plus the flexibility to add custom milestones that matter most to your family.
Track pre-made developmental milestones on Keepsies:
Physical & Motor Milestones
Rolls from tummy to back or back to tummyPushes up on arms during tummy timeSits with supportReaches for and grasps objectsBrings objects to mouthShows improved head and neck control
Sensory & Cognitive Milestones
Explores objects by touching and mouthingWatches movement with interestRecognizes familiar peopleShows curiosity about surroundingsResponds to changes in environment
Social & Emotional Milestones
Smiles and laughs frequentlyEnjoys social play and interactionResponds to facial expressionsShows excitement when seeing familiar peopleBegins expressing likes and dislikes
Communication Milestones
Babbles with consonant sounds (like "ba" or "da")Responds to voices and soundsMakes sounds to get attentionBegins back-and-forth vocal play