Baby age, week by week
10 Weeks Old — How Many Months?
A 10-week-old baby is 70 days old — about 2 months and 9 days.
This week
Head control is getting stronger, and smiles come much easier now.
The math
10 weeks = 70 days ≈ 2 months + 9 days
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 10
At 10 weeks your baby is near the 2 Months mark. Around this age, many babies:
- Holds their head up at a 45-degree angle during tummy time
- Follows a toy with their eyes all the way from side to side
- Smiles back at you - real smiles, on purpose