Your baby at 11 months
Everything that lines up at this one age — growth figures from the WHO standard, sleep norms, the milestones whose normal window covers this month, and the vaccine doses due. Percentiles are called centiles in the UK; the numbers are identical.
Growth at 11 months
Median means half of babies are above and half below. Being away from the median is not a problem in itself — following your own curve is what matters.
| Median (50th) · Boys | Middle half (25th–75th) · Boys | Median (50th) · Girls | Middle half (25th–75th) · Girls | |
|---|---|---|---|---|
| Weight | 9.41 kg | 8.74–10.13 kg | 8.72 kg | 8.03–9.48 kg |
| Length | 74.5 cm | 73.0–76.1 cm | 72.8 cm | 71.1–74.5 cm |
| Head circumference | 45.8 cm | 44.9–46.6 cm | 44.6 cm | 43.7–45.5 cm |
Want the number for your own baby? Open the percentile calculator
Sleep at 11 months
Ranges, not targets. Healthy babies sit outside them regularly.
- Total per day
- 12 h – 16 h
- One nap
- 1 h – 1 h 30 m
- Night sleep
- 10 h – 12 h
Milestones in this window
The window is when a skill usually appears — not a deadline. Appearing later than the window is a reason to mention it at a check-up, not to worry alone.
- CrawlsGross motorusual window: 6–11
- Stands aloneGross motorusual window: 9–15
- First stepsGross motorusual window: 8.2–17.6
- Pincer graspFine motorusual window: 7–12
- First wordSpeechusual window: 9–15
- Waves bye-byeSocialusual window: 8–14
- Object permanenceCognitiveusual window: 7–12
Reference figures, not medical advice. Every baby differs; a check-up answers questions a table cannot.