WhenMyBaby Firsts > Smiling (Results)

When do babies start to smile socially

On average, based on a total of 420 votes:

- Babies start smiling at 5.5 weeks!

- Girls at 5.7 weeks (233 votes)
- Boys at 5.3 weeks (174 votes)

See boy vs. girl smiling comparison chart below!

Chart shows age ranges for when babies start smiling
Chart compares when baby boys and girls start to smile

*Every baby is unique and develops at his or her own pace, sometimes earlier or later than other babies for any given milestone. These statistics are based on aggregated votes by parents visiting WhenMyBaby.com. If you have any questions or concerns about your baby's development, make sure to immediately discuss with your baby's medical doctor and/or healthcare provider.