Real family data
When Do Babies Actually Laugh? Real Ages from Thousands of Families
Half of babies laugh for the first time by 3 months, based on real entries from the Baby Notebook community. The most common age was 3 months; the middle half fell between 3 months and 4 months.
| Age | Share of families |
|---|---|
| 1 month | 3.9% |
| 2 months | 18.9% |
| 3 months | 47.5% |
| 4 months | 18.6% |
| 5 months | 7.3% |
| 6 months | 1.8% |
| 7+ months | 2% |
Boys and girls: boys averaged 3.2 months and girls 3.3 months.
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