Baby age, week by week
48 Weeks Old — How Many Months?
A 48-week-old baby is 336 days old — about 11 months and 1 day.
This week
They understand far more words than they can say. Choose yours kindly.
The math
48 weeks = 336 days ≈ 11 months + 1 day
A month is longer than 4 weeks — on average 30.44 days — so you can't just divide by 4. The exact answer shifts a little with the calendar, so for the day-perfect number, use the calculator with your baby's real birthday.
Get the exact age →What babies do around week 48
At 48 weeks your baby is near the 11 Months mark. Around this age, many babies:
- Stands alone, strong and steady
- Says 1-3 clear words besides mama and dada
- Shows love freely, with hugs and pats