15 Months Old
Walks independently, 3–5 word vocabulary — plus sleep, feeding, and the gear that helps at 15 months old.
At 15 months old, your baby is developing fast. Here are the milestones to watch for.
Milestones
- Walks independently
- 3–5 word vocabulary
- Stacks 2 blocks
Frequently asked — 15 Months Old
What milestones should I expect at 15 months old?
Common milestones include: Walks independently; 3–5 word vocabulary; Stacks 2 blocks. These are typical ranges — reaching them a bit earlier or later is usually normal. Contact your pediatrician if your baby misses several milestones for their age or loses skills they had.
How much should 15 months old sleep?
Around 11–14 hours/day incl. 1–2 naps, typically with 1 nap during the day. Sleep needs and patterns vary, and regressions are common around 4, 8–10, and 18 months. Always follow safe-sleep rules: on the back, on a firm flat surface, with nothing in the sleep space, for the first year.
What and how much should 15 months old eat?
Mostly table foods + ~16–24 oz whole milk. Whole cow’s milk can be a main drink after 12 months; aim for variety and iron-rich foods. Follow your baby’s hunger and fullness cues.
Best gear for this stage
Expert-tested rankings and how-to-choose guides for what’s next.